THC - CBD CBN - MAKE MORE USEING UVB`s/ UVA`s..CHEAP&SIMPLE.?!!

eza82

eza82

Well-Known Member
WHY IS THIS NOT COMMON PRACTISE?????

MAKE MORE THC........
& my nxt experiment#

I started to think about THC again... a previous post had theory about dose watering leaving it on brink of water starvation....... which is not a bad theory in all just alittle off.....
IMO it will induce the hormone ABA in which the plant will stop growing ands protect it self ..... it will think its in drouhgt. But this is not nesseceraly a bad thing as my first thought was (less yield)... I dont think this method would work BUT was aong the right lines.....

So I continued to do my research in why MJ produce THC... I have come across many reasons of why & how`s the MJ plant produces THC: like to spread seed by sticking to fur,scraping make it think its dieing,types of fertz & poop,rusty nail through stalk and man more carck theories...
this just made me laugh with some of the shit stated....

So this is the theory : it comes down to Environmental Influence again........ The best way to take a look at how environment affects THC production is to look where on the planet cannabis has naturally adopted a high THC profile. As cannabis has spread around the world it has taken on many different traits to help in its adaptation to varied areas such as africai, south america,vietnam,etc.
ULTRAVIOLET (LACK OF ....HID HAVE NO UVA UVB)
The best drug varieties have always been found at equatorial or high altitude locations. The one thing which both of these variables have in common is high light intensity and a large amount of ultraviolet (UV) light in the spectrum.
Recent Swiss trials in outdoor plots of clones grown at different altitudes have shown that there is correlation between higher altitude and increased potency (although there seems to be a trade off in yield).

This likely means that THC-rich resins act to protect the plant and its seed from both higher light intensities and ultraviolet presence. It's no surprise that cannabis has developed a chemical to protect itself against the Sun's damaging UV rays, as they can be injurious to all forms of life.

Therefore a high-THC plant grown in a low THC environment will likely produce a medium THC result.

Humidity also plays a role in plant resin production. Although some potent equatorial strains do seem to occur in high humidity areas, most high in thc -tested strains have evolved in drier areas, like Afghanistan. The aridity of the areas of Afghanistan where Indica strains have evolved is quite apparent by the trait of large dense flower clusters.

There are many examples of non-cannabis plants producing resins in order to protect themselves from drying out. The waxy coating on cacti and other succulent plants is a prime example.

marijuana flowered in humid conditions will often have a longer stalk on the glandular trichome than the same strain grown in drier conditions. While this may give the appearance of being very crystallized, it will likely contain less THC than the same plant grown in a drier environment. Another problem with longer trichome stalks is that the gland heads are more likely to break off during handling.

This is probably why AN outdoors high so much BETTER when you get good genetics..

Experiment:
IM Buying a aquirium light tomorrow! & humidity to around 60%
This will be easy to compare THC for I have smoked the same bud for yrs!
I will run the light for around 5hrs of the light cycle for the last 3 weeks of flower.
note: UV can kill your plants by burning them...

Catalina 5000k - UVA/UVB 55w
$ 30.00

combinations and distance is the nxt challenge:​




Compact Germicidal UV Lamp (15W, 25W, 23W)
​
Product Description​

Compact UV Germicidal lamp, Double H shape / Single H shape​

Material: High Purity Quartz Glass​

Voltage: 110 to 230V AC

Wattage: 15W, 25W, 23W
Base: E27 / E14
Lamp diameter: 12mm
Peak: 253.7nm / 253.7nm+185nm
Average life time: 8, 000hrs​


Feature: Compact and mini size, easy to install, external ballast is not needed

Applications: Easily installed in table lamp as a portable sterilizer for Kitchen, Bed room, Office, Elevator, etc.​

Trademark:CnlightModel: 15W, 25W, 23WCompany:Cnlight Co., Ltd.​


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I have found a breakdown of the light spectrums givin out by uva uvb lights for reptiles....​

[FONT=Verdana, Arial, Helvetica, sans-serif]The "photobiological activity" of a lamp: measuring the UV Index [/FONT]


the conversion betweenwatts vs UV vs nm

this will be helpfull to figure out what light​


I will ramp this up slowly - probably up to a 4 globe setting with 6-8hr period... or untill the plants tell me ENOUGH!


pLACES TO FIND THESE LIGHTS
SUN TANNING, INSECT ATTRACTION,REPTILE, AQUIRIUM
Forensics, , psoriasis, polymerization, , Dermatology, Night Clubs

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THIS IS WORTH WATCHING!!!!!!!!!!
Here is the best Youtube vid on the subject and a really good watch, about 15mins, Old school dude but proffesor like stoner... if I have not convinced you he will....

THC, UVB and Me

http://www.youtube.com/watch?v=IPcpt3Be28o





This is todays UV index----- Out doors in the top end of australia sounds good !

But what I want to replicate environmentally is : Vietnam
UV Index: 6-11 (Extreme)- during natural growing period. sep-may



Relative Humidity: 50% - 100% - during natural growing period. sep-may



forecast:
UV index:sat7 sun8 mon 8 tue8 wen8 thu8 fri8 sat7
Temp max(°C)29 33 35 33 33 33 32 30 Temp min (°C)21 21 23 22 22 22 22 22.


Some more examples of HIGH THC producing areas and ther UV index​



Country (City) . J F M A M J J A S O N D​


Brazil (Rio de Janeiro) 23°S 12 11 9 7 5 5 5 7 9 10 12 12​


Kenya (Nairobi) 1°S 12 13 13 12 11 10 11 11 12 12 12 11​


Vietnam (Hanoi) 21°N 6 8 10 11 11 11 12 12 10 8 6 6​



Cuba (Havana) 23°N 6 8 9 10 10 11 12 11 10 8 6 5​


Panama (Panama) 9°N 9 11 12 12 11 11 12 12 12 11 9 9​


& for comparison
Australia (Sydney) 34°S 9 9 7 5 3 2 3 4 6 7 9 10
Australia (Darwin) 13°S 12 13 12 10 8 8 8 10 11 13 12 12​


USA (Los Angeles) 34°N 3 4 6 8 9 10 10 9 7 5 3 2
USA (New York) 41°N 2 3 4 6 7 8 9 8 6 3 2 1​



So it seems that good pot outdoors is grown in the range of about 25 degrees either side of the equator.... so there is room for experiments..
My nxt problem the conversion​

exposure to the B-band of ultraviolet light (UVB), light at a wavelength of:
270-315 nm is about where coral and reptiles grow the best; and the range Proffessor stoner said was aroun 270 - 300 nm so my range is in there somewhere.............​

The light I have suggested is around 350nm - at 1 foot so distance will have to be played with...
note:do not look into globe you will burn eyes
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ABOUT The Ultraviolet Spectrum​

Ultraviolet refers to all electromagnetic radiation with wavelengths in the range of 10 to 400 nanometers, or frequencies from 7.5E14 to 3E16 Hz.​

The UVA range is wavelengths from 315 to 400 nanometers. Wavelengths from about 345 to 400 nM are used for "Blacklight" effects (causing many fluorescent objects to glow) and are usually very slightly visible if isolated from more visible wavelengths. Shorter UVA wavelengths from 315 to 345 nM are used for suntanning.​

UVB refers to wavelengths from 280 to 315 nanometers. These wavelengths are more hazardous than UVA wavelengths, and are largely responsible for sunburn. The ozone layer partially blocks these wavelengths.
ref: http://members.misty.com/don/uvbulb.html​

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UV radiation



Electromagnetic radiation or "light" is the collective name for all forms of energy that move with the speed of light. There are different "types of light" in the spectrum, depending on their energy, which is related to the wavelength (freqency) of the light: the lower the wavelength, the higher the energy.​



The human eye is sensitive for only a part of the spectrum, referred to as "visible light": between 400 and 780 nm (1 nm = 10-9 meter). The wavelength of the light determines the colour: 400 nm is blue, 700 nm is red.​

The part of the spectrum immediately to the left of blue, between 200 and 400 nm is the ultraviolet light (UV). The UV is usually divided into three components, with increasing energy:
  • UV-A: 320-400 nm
  • UV-B: 280-320 nm
  • UV-C: 200-280 nm
Of these UV-B is the most dangerous form, since part of it reaches ground level, where it can affect human health (e.g. cause certain forms of skin cancer) and damage the DNA of flora and fauna. Note that the wavelength of the division between the UV-A and UV-B bands is sometimes set at 315 nm (see note below).


The UV-C energy is potentially more dangerous, but it decreases dramatically as ozone increases, because of the strong absorption in the 200-280 nm wavelength band. The UV-B is also strongly absorbed, but a small fraction reaches the surface. The UV-A is only weakly absorbed by ozone, with some scattering of radiation near the surface.​

CLICK TO ENLARGE!!!!!!!!!!​

The curve shows a typical vertical profile of ozone in the midlatitudes of the northern hemisphere: the concentration of ozone as function of altitude. Superimposed on the figure are plots of UV radiation as a function of altitude for UV-A, UV-B and UV-C. The width of the bar indicates the amount of energy as a function of altitude. UV-C is absorbed completely in the stratosphere. Of the global UV radiation at the ground, 94% is UV-A, 6% is UV-B.

figure adapted from Stratospheric Ozone, An Electronic Textbook
Atmospheric ozone thus shields life at the surface from most of the harmful components of the solar UV radiation. Chemical processes in the atmosphere can effect the level of protection provided by the ozone in the upper atmosphere.​





Ozone decline in the stratosphere can be caused by:
  • Chemical processes resulting from the breakdown of CFCs and other ozone depleting gases.
  • Changes in the stratospheric meteorology, e.g. due to changes in the climate and in trace gases such as nitrous oxide (N2O), water (H2O) and methane (CH4).
Thinning of the atmospheric ozone in the stratosphere leads to elevated levels of UV-B at ground level and increases the risks of DNA damage in living organisms. A 1% decrease in ozone, for example, will lead to an estimated increase of UV-B of about 2%.


It is therefore important to monitor the UV radiation that reaches the ground. One of the tools for this is the UV index.​


Note on the UV-A & UV-B wavelength ranges​



The wavelength of the devision between UV-A and UV-B varies in the literature and this may lead to some confusion.​



The Commission Internationale de l'Éclairage (International Commission on Illumination) uses 280-315 nm as UV-B and 315-400 nm as UV-A.​

Other sources put the devision point at 320 nm, as in the above given definition. In particular this is done in medical (dermatological) applications, as well as in cosmetics. Also several text books on UV use 320 as devision point.​

To avoid confusion, one could use the following short-hand notation: dUVB for 290-320 nm and dUVA for 320-400 nm, where "d" stands for dermatological, and use UVA and UVB for the 315-nm devision quantities. The use of the prefix "d" is not very common, though.​

Within the TEMIS project, the data supplied are the UV index and UV dose, which cover (parts of) both UV-A and UV-B. The precise wavelength range that is relevant for these quantities depends on the action spectrum applied:
  • UV range relevant for erythema: 280 - 400 nm
  • UV range relevant for general DNA damage: 256 - 370 nm
UV index


The erythemal UV index -- usually simply called the UV index (UVI) -- is an estimation of the UV levels that are important for the effects on the human skin, where 1 unit equals 25 mW/m2. It is usually given for local solar noon, when the Sun is highest in the sky, and it is valid for clear-sky conditions: effects of clouds shielding part of the UV radiation are not taken into account.​



The erythemal UV index is an artificial quantity derived from the erythemal irradiance, which is an integration of the UV irradiance at the ground weighted by the CIE spectral action function. The CIE action spectrum is a model for the susceptibility of the caucasian skin to sunburn (erythema). It is proposed by McKinlay & Diffey (1987) and adopted as a standard by the Commission Internationale de l'Éclairage (International Commission on Illumination).​

Of the global UV radiation at the ground, 94% is UV-A, 6% is UV-B.​

Of the erythemal UV irradiance, however, 17% is UV-A, 83% is UV-B.

CLICK TO ENLARGE!!!!!!!!!!
The CIE action spectrum is a model for the susceptibility of the caucasian skin to sunburn (reddening of the skin; erythema). It was proposed by McKinlay & Diffey (1987) and adopted as a standard by the Commission Internationale de l'Éclairage (International Commission on Illumination). ​


===> Some more info on action spectra




CLICK TO ENLARGE!!!!!!!!!!​

Ultraviolet spectrum measured with the Brewer Spectrophotometer at De Bilt (Netherlands) on 1 June 2002, a completely cloud-free day. Also drawn is the CIE erythemal action spectrum. The multiplication of these two gives the erythemal UV spectrum, and the surface below this graph (shown in yellow) is the UV index. The value of the UVI from this measurement is 6.3. ​

figure by Marc Allaart, KNMI, De Bilt

Ground-based measurements such as the one from the previous graph give UVI values for these specific sites at these specific moments in time only. In order to obtain the UVI for all locations, it must be computed from total ozone amounts, in combination with the solar zenith angle (SZA): the angle from which the Sun shines. The UV index is usually given at noon of the local solar time: the moment when the Sun is highest in the sky (i.e. in the zenith); this moment is therefore not noon of the local time zone.
Ground-based measurements of the UVI and simultatiously measured total ozone column (TOC) values have resulted in a parametrisation of the UVI as function of TOC and SZA, both at local solar noon. The TOC at local solar noon is determined from satellite observations in combination with data assimilation, which uses meteorological fields (wind, temperature, pressure) to obtain a global ozone field at local solar noon. The SZA at local solar noon depends on the latitude and the day of the year. The UV index thus is a measure for the amount of UV radiation valid for clear-sky conditions and at local solar noon. This does not say much about the erythemal UV dose: the total amount of UV that actually can reach the human skin during a day.​



ref: http://www.temis.nl/uvradiation/info/index.html




So essentually its; UVB`s (280-300nm) is the spectrum that we are looking for........UVB in natural sunlight is 290-295nm.​




UVB`s on REPTILES HAve BEEN TESTED!​

[FONT=Verdana, Arial, Helvetica, sans-serif]REPTILE TEST FOR UVB - [/FONT]

[FONT=Verdana, Arial, Helvetica, sans-serif]We tested samples of fluorescent lamps from each brand which has been alleged to have caused photo-kerato-conjunctivitis in reptiles, and compared the test results with those from other brands. [/FONT]​

[FONT=Verdana, Arial, Helvetica, sans-serif]Broadband UVB meters did not prove very helpful in determining the cause of the problem; they indicated that at the distances at which problems occurred, the total UVB (in microwatts per square centimetre) from these lamps was no higher than that found in natural sunlight. However, total UVB measurements give little indication of the photobiological activity of the lamp. [/FONT]

[FONT=Verdana, Arial, Helvetica, sans-serif]Measurements of the UV Index (which does provide a measure of this) revealed that whereas 100 µW/cm² total UVB from sunlight was recorded as yielding a UV Index of 1.6 – 2.0, these lamps were producing emissions in which 100µW/cm² total UVB yielded a UV Index of between 8.9 and 14.2. Light from these lamps would therefore appear to be between four and eight times as photobiologically active as light from the sun. At close range these lamps were all producing hazardous levels of UVB. [/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]Spectrograms indicated that all these lamps utilise a distinctive phosphor of a type used in lamps for testing the deterioration under UVB of resistant materials such as roofing and car bodywork, and in older-style human clinical phototherapy lamps (so-called "FS" lamps). The lamps we tested from three different brands generate low wavelength UVB, some from as low as 275 - 280nm, whereas the lower limit of UVB in natural sunlight is 290-295nm. (The phosphor used in many other brands of reptile UVB lamps is of a type used in some human tanning lamps, which mimics the UV in sunlight and produces no UVB at wavelengths below 290nm.) [/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]As well as a much higher proportion of more damaging non-solar UV energy at wavelengths below 295 nm, the lamps with the problem phosphor proved to have a higher total UVB output than most other brands of fluorescent reptile UVB lamps. Because much of this is in the more photobiologically active wavelengths, the risk of reaching a threshold dose for photo-kerato-conjunctivitis, and possibly other forms of UV radiation damage, is much greater than with other lamps. [/FONT]​


[FONT=Verdana, Arial, Helvetica, sans-serif]A combination of other factors apparently increased the risk of photo-kerato-conjunctivitis with these lamps even further: [/FONT]
  • [FONT=Verdana, Arial, Helvetica, sans-serif]In some cases, product literature did not give adequate information. It is essential that lamps are not sold without clear recommendations regarding suitable basking distances and the hazards of over-exposure. Many reptile keepers are unaware that there are any risks associated with close contact with a fluorescent UVB source. The history of fluorescent UVB lamps is such that they are often perceived as "weak" sources of UVB and keepers are often advised to position them close to the reptile. [/FONT]
  • [FONT=Verdana, Arial, Helvetica, sans-serif]When placed in aluminium reflectors, in some cases UVB beneath compact lamps was increased by more than 700%. The extreme increase in UVB underneath aluminium reflector domes has not been widely known, or the hazard recognised, either by manufacturers or hobbyists. [/FONT]
  • [FONT=Verdana, Arial, Helvetica, sans-serif]Most of the lamps have a low visible light output. They are therefore less likely to induce an aversive reaction, or pupillary constriction, when in the reptiles' line of sight. They do not "look like" very intense, direct tropical sunlight.[/FONT]
  • [FONT=Verdana, Arial, Helvetica, sans-serif]Most of the UVA output of these lamps is not in the visible UVA range for reptiles, since the threshold for vision is about 350nm. This reduces even further the visual impact of the lamp to the reptile. [/FONT]
  • [FONT=Verdana, Arial, Helvetica, sans-serif]Fluorescent lamps produce a small amount of heat. This is insufficient to deter a reptile from a close approach, and in fact the gentle warmth may even prove an attraction. [/FONT]
  • [FONT=Verdana, Arial, Helvetica, sans-serif]Broadband UVB meters such as the Solarmeter 6.2 provide only readings of the total UVB in microwatts per square centimetre. This gives little indication of the photobiological activity of the UVB radiation from this type of lamp. Misleading comparisons of lamp and solar readings taken with these meters may be made, possibly leading to incorrect placement of the lamp, if this is not understood. [/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]We believe the use of a “phototherapy” phosphor in these lamps is a cause for concern. The effects of long-term exposure to non-solar wavelengths on reptiles is unknown, but these wavelengths are far more damaging to living cells than solar wavelengths.[/FONT][FONT=Verdana, Arial, Helvetica, sans-serif] FS lamps have been used widely in research upon cell damage and immunosuppression, and to induce skin tumours in laboratory animals. FS lamps have been used in at least two studies with reptiles which suffered unexpected detrimental effects apparently related to their UV exposure, including photo-kerato-conjunctivitis, depression and death, and skin tumours. Although the compact lamps we tested from ZooMed, and the T5 and T8 tube we tested from R-Zilla are not FS lamps, they do appear to contain the same phosphor. The Big Apple Herpetological Mystic tube and compact lamp we tested, however, have spectra very similar indeed to FS lamps. [/FONT]​



ref: http://www.uvguide.co.uk/phototherap...or-summary.htm



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eza82

eza82

Well-Known Member
So it could be GENE protection...thc.. i mean from all of this it seems as though above 270nm uvb/ uva will cause DNA damage.... So by producing thc the plant can effectivly reflect harmful UVB`s UVA`s....
 
NYC Diesel

NYC Diesel

New Member
Thats quite a lot of info, nice job! Id just like to add one tiny thing. The reason those resin glands are there is a trait by the plant that during the end of flowering season, those glands are created to protect the plant from the sun's rays. Like you mentioned early on, the most potent plants are usually found in equatorial places, or regions of high altitude, where there is a large amount of direct sunlight. Exlcuding all the chemistry stuff you mentioned, the mroe intense the light during the flowering period, the larger the trichomes will get because the resin glands will be working overtime. This results in a LOT of THC production.
"So it could be GENE protection...thc.. i mean from all of this it seems as though above 270nm uvb/ uva will cause DNA damage.... So by producing thc the plant can effectivly reflect harmful UVB`s UVA`s.... "
Right on there. Harmful rays from the sun give you skin cancer, and are the reason you smoke cannabis! Like most weeds, this is one of those genetic traits designed to keep their species thriving.
And like you also mentioned early on, moisture levels do matter. Not watering your plant the last week or so of flowering will make the plant a lot drier inside, which means the light will have more effect and will heat up the epidermis of the plant. This stimulates the resin glands to produce more juicy trichomeness to reflect the light and lower the temperature of the plant. These are just some of my theories i have picked up on by reading threads like this.

Nice post dude. +rep
 
eza82

eza82

Well-Known Member
ANYONE placed UV in there grow ?
I have been told MH dose contain alittle.. but as he posted "not sure on how much passes through glass envolope...
 
eza82

eza82

Well-Known Member
Just brought :









UVB Reptile Fluorescent Light Tubes x2
  • ​
  • [FONT=Verdana, Arial, Helvetica, sans-serif]Zoo Med Reptisun 10.0 UVB
  • [FONT=Verdana, Arial, Helvetica, sans-serif] (1.5inch diameter x 2 tubes)[/FONT]
  • [FONT=Verdana, Arial, Helvetica, sans-serif][SIZE=-1]S[FONT=Verdana, Arial, Helvetica, sans-serif][SIZE=-1]pecified
  • [SIZE=-1] output: up to 15% UVA : 10% UVB[/SIZE][/FONT] [/SIZE][/FONT]
[/SIZE][/FONT]
Size: 58cm or 2'​
  • Wattage: 20W​
  • $15 from ebay​
full guide on these tubes:​








Some tests out of link above...ON DECAY OF UVA UVB SPECTRUM OVER TIME.
​

[FONT=Verdana, Arial, Helvetica, sans-serif]We were interested to find that the initial output of individual tubes of the same type from the same manufacturer may vary somewhat. Individual tubes then seem to vary slightly in their rate of decay, as well. We have several tubes on long-term measurement and whereas all have decayed somewhere around 15 - 20% over the first three months, some lamps have decayed steadily throughout, whereas others appear to have lost most of this in the first 150 hours and thereafter have decayed more slowly. [/FONT]
[FONT=Verdana, Arial, Helvetica, sans-serif]We have found considerable variation in the output of older tubes submitted for testing after many months of use. With some brands, tubes that had been in use for a year were found to be emitting as much, or more UVB than others of the same type that were only five or six months old. We do not know whether this is due mainly to a difference in output from the beginning, or to different rates of decay[/FONT]​
 
NYC Diesel

NYC Diesel

New Member
damn sounds like you are gunna have a big THC turnout for this experiment. Lets just hope those lights dont burn the plant from it growing fast haha
 
eza82

eza82

Well-Known Member
haze2 said:
Hey eza Good Damn info thank you plus rep dawg!!
Click to expand...
I can not for the life of me, understand why its not common practise? Cheap light fixture allows you to introduce?????
This is a back theory of producing more full tric`s -which in turn THC.... gene protction is common with all speices on the planet.... And the Sun is one of the biggest killers..... hense y MJ will produce thc, its like sunblock for plants...protecting its babies from heat and stress. Sound familiar?
 
haze2

haze2

Well-Known Member
I dont know this is my first real grow and its came to me little natural. I read about it and now Ill be using some uvb in about a week. I also dont know why people dont use the mh and the shps through out the grow, it does the same thing improves trich production.
 
eza82

eza82

Well-Known Member
haze2 said:
I dont know this is my first real grow and its came to me little natural. I read about it and now Ill be using some uvb in about a week. I also dont know why people dont use the mh and the shps through out the grow, it does the same thing improves trich production.
Click to expand...
I use a 400w MH nxt to a 400w HPS on one of my 4x4 e&B tables and I believe that this repti light will produce much more THC.... The glass that MH is envolped in is possibly a resriction... I do understand that it dose but how much ??? I am looking to replicate Vietnam type UVB/UVAs... So for me I think a UVB 10 putting it around 1/2ft away from target...should give me what im looking for......
But ...... I cant really go into the grow during this time...ill get sunburnt !:joint:
 
shepj

shepj

Oracle of Hallucinogens
heh spreading the word eh. Definitely a solid presentation, props there, now more people just need to read this.
 
haze2

haze2

Well-Known Member
Indeed thats sweet that you use both the lights for your girls it works so well. What were you talking about restriction of what?? Ill be getting a uvb bulb soon and where shall I put it considering the hid bulbs are directly above the plants,.
 
eza82

eza82

Well-Known Member
haze2 said:
Indeed thats sweet that you use both the lights for your girls it works so well. What were you talking about restriction of what?? Ill be getting a uvb bulb soon and where shall I put it considering the hid bulbs are directly above the plants,.
Click to expand...
I run 1 x 1000w hps on final table (3# 1month) - I run the above for flower table (2# 1 month)
1x 400 MH for veg table (#1 1 month) and 4 agri grow fluro for clone box. (0# 2-3weeks)
I plan on placeing mine on the final table (#3) for 6 hrs of the cycle and placed as close to the tops of plants WITHOUT blocking to much HPS.
I have been racking my brain on HOW...
I think I may run it as a bar along the rear wall and rotate my plants past it for a month.

What i mean by restriction is THE METAL HALIDE puts out some UVA/UVB but the glass in which its envolped I have read that it STOPS some of the UVB/UVAs.
 
haze2

haze2

Well-Known Member
O Ok that makes sense thats what ive heard too. Yeah maybe that would be the way to do that and then like you said just rotate the plants pass them. So what do you think about adding like 2 10.0 bulbs??
 
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