Why do some guys wats to still use mono led with cobs?

Add mono's to cobs?

  • Total voters
    116
littlejacob

littlejacob

Well-Known Member
Bonjour
Lol...yes YIELDS...!
But you can't compare a guerilla outdoor and a legal one in a greenhouse...
Greenhouses could be compare to a king size indoor grow...you can go every day in your greenhouse, you have everything you need in it...nutes, water, tools, etc...no rain, you can add lights...you are able to start sooner and to finish later...even to trigger bloom earlier in small greenhouses by covering it with a blanket (I even see kind of dome (half a ball!) With electric motor + solar panels + batteries who stayed open for 12h and automatically close for 12h to harvest sativa dom in september!)
But in guérilla style...no water, no tools, nothing....
You have to go far from town...I live on
french Riviera...that mean a lot of peoples and houses, ,building...so we really have to go far...to find quite place...in those area there is hunters, mushroom, wild asparagus and dandelion (many other things too) so at some periods there's few peoples in the wood...so no 2/3 meters plants (7/10 feet)!
I keep all my plant at 2 feet from the floor...and never more than 2 at the same place
30/45 walk to reach the spot...you pray all week for rain...week end arrive and no rain...you walk to the spot with 15gl water...you loose 1 liter to go!...and the day after it is raining...lol!
I could talk about shit who could happen outdoor all day...
Have a great day ★
 
HockeyBeard

HockeyBeard

Well-Known Member
Well, yes, I didn't know that we were specifying a difference between a guerrilla grow and a legal outdoor op. Of course, if you're breaking laws, discretion is a must. But, for those who are fortunate enough to be in nice legal climates, we don't have to worry about that when we've dotted the I's and crossed the T's, FOR THE MOST PART. Having a guerrilla grow is a lot of work, and I'm fortunate enough to be able to take care of my stuff within the law. I'm hoping to have a better plot of land to throw a handful of ladies in for next season. And yea, light dep is the way to go for me in Michigan. I hope to have a couple dozen vegged out and ready to put outside in early May, and start a light dep in the middle of June so I can get something pulled down before everyone else in September.
 
littlejacob

littlejacob

Well-Known Member
Bonjour
If you have a legal outdoor grow and someone try to rob it and cops catch him...what would happen?
He will go to jail for weed robbery...lol!
I hope one day it will be legal in France...it would help many peoples...I think we go in this way...since few months now, possession is not send you to jail anymore, you pay a fine!
Have a great day ★
 
ttystikk

ttystikk

Well-Known Member
littlejacob said:
Bonjour
If you have a legal outdoor grow and someone try to rob it and cops catch him...what would happen?
He will go to jail for weed robbery...lol!
I hope one day it will be legal in France...it would help many peoples...I think we go in this way...since few months now, possession is not send you to jail anymore, you pay a fine!
Have a great day ★
Click to expand...
In Colorado, if someone steals your cannabis they can be charged with theft of a controlled substance in addition to breaking in and the usual offenses. The police here take such cases very seriously indeed, the word is out that being a thug in the pot business in Colorado has a long future in prison. God help the dumb son of a bitch who uses a gun to do it, too! That is guaranteed to get them riled up, as many of them are military veterans and still crave the action.
 
E

elninonino

Member
i hope you have some good answers for my questions.

Can we remove the phosphor from our led?
If we can, how does it effects the effency.
is it an 450nm emmiter then ?
Does it change the PPF?


i think this could be interesting for a 3000k 4xCXB flower only setup.

just replace 1 COB,
dimm it to 50%
and get more blue ratio
to use it as vegi led.


Sry for my poor english
 
heckler73

heckler73

Well-Known Member
elninonino said:
i hope you have some good answers for my questions.

Can we remove the phosphor from our led?
If we can, how does it effects the effency.
is it an 450nm emmiter then ?
Does it change the PPF?


i think this could be interesting for a 3000k 4xCXB flower only setup.

just replace 1 COB,
dimm it to 50%
and get more blue ratio
to use it as vegi led.


Sry for my poor english
Click to expand...

Buying a blue LED is cheaper and less bizarre (scraping phosphors? :-? ). Or use cool whites.
 
Last edited:
E

elninonino

Member
a 3590 at 1.4A has 60% effency for a fair price at cutter. if i buy those single leds i think i have more to work and more to pay for less effency.

just wanna know if this could work?

buying 4 for flowering.exchange 1 only blue for vegi.

5 led would be cheaper then a set of only vegi and only flower setup?

edit:
while looking for 450nm cobs i found
luxeon LXK0-PR04-0016
9watt at 60% effency for 20 bucks.
i need 5 of them to replace one 3590 at 1.4 .
just to get more blue to the spektrum.thats not cheap.
 
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E

elninonino

Member
its about the possibility.if it can be done?

buying 5 cobs and have 1 light for vegi with a high 450nm,changing the one cob and get a flower light.

5 cobs are cheaper then 8.

the possibility to shift the blue:red ratio in that case is what im intressed in.(especially in that <60% effi. range)

i hope someone has some info or already tryed it..
 
Rahz

Rahz

Well-Known Member
I suspect it would damage the chip, but have never heard of it being done. If you really want to try buy a small CXB like the 1304 ($4) and test it out.

I agree with littlejacob though, 1 6500K CXB at 1400 or 1750ma could veg a 2x2, then flip on some 3000Ks for flower. Personally I don't mind vegging and flowering at 3500K, but it would be a cool experiment to try on something cheap.
 
alesh

alesh

Well-Known Member
elninonino said:
i hope you have some good answers for my questions.

Can we remove the phosphor from our led?
If we can, how does it effects the effency.
is it an 450nm emmiter then ?
Does it change the PPF?


i think this could be interesting for a 3000k 4xCXB flower only setup.

just replace 1 COB,
dimm it to 50%
and get more blue ratio
to use it as vegi led.


Sry for my poor english
Click to expand...
I've never tried it but I suspect that it would be possible. Look at some guys at candlepowerforums.com , they're dedoming Cree LEDs and I think I saw a LED with its phosphorus removed [not a COB, though]. It should raise efficiency but the PPF would be probably lowered.
 
stardustsailor

stardustsailor

Well-Known Member
There's no way ,that the phosphorus layer can be removed from a COB LED ,
without causing damage to the latter.
Tried myself (not for the same reasons mentioned above ,though ) without any success ,
both with a CXA3070 and a Vero 29 . Once the silicone layer is removed ,
it rips apart all the tiny micro-wiring of the diodes ....And usually plenty of the diodes themselves.

Osram Oslons also once dedomed are going to be ..kaputt ...

Probably only LEDs without any ( internal ) micro-wiring ( contacts/pads only ) ,
can be " de-domed " with a relative degree of "safety" .....

Cheers.

Edit/ P.S. :

As also I'm quite unsure what would be the actual effects of the atmospheric air
( solid particles ,fibrous debris ,possible corrosive agents or gases like NOx ,SOx ,CO2,Cl2,etc ) to an exposed LED diode .

How direct contact of the LED diode with atmospheric agents ,
would affect the radiation power and pattern of the LED diode and it's service life ?

In what way the exposed LED diode can be cleaned from fibrous debris and dust particles ?

What about the acids , that gases like NOx ,SOx & CO2 ,are forming ,
along with water vapour ?
How they will affect the semiconductor elements used in a LED diode ?

;-) Forget it ...
 
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ttystikk

ttystikk

Well-Known Member
stardustsailor said:
There's no way ,that the phosphorus layer can be removed from a COB LED ,
without causing damage to the latter.
Tried myself (not for the same reasons mentioned above ,though ) without any success ,
both with a CXA3070 and a Vero 29 . Once the silicone layer is removed ,it rips apart all the tiny gold micro-wiring of
the diodes and usually plenty of the diodes themselves.

Osram Oslons also once dedomed are going to be ..kaputt ...

Probably only LEDs without any ( internal ) micro-wiring ( contacts/pads only ) ,
can be " de-domed " with a relative degree of "safety" .....

Cheers.

Edit/ P.S. :

As also I'm quite unsure what would be the actual effects of the atmospheric air
( solid particles ,fibrous debris ,possible corossive agents or gases like NOx ,SOx ,CO2,Cl2,etc ) to an exposed LED diode .

How direct contact of the LED diode with atmospheric agents ,
would affect the radiation power and pattern of the LED diode and it's service life ?

In what way the exposed LED diode can be cleaned from fibrous debris and dust particles ?

What about the acids , that gases like NOx ,SOx & CO2 ,are forming ,
along with water vapour ?
How they will affect the rare earth and semiconductor elements used in a LED diode ?

;-) Forget it ...
Click to expand...
@Humanrob here's more reasons why people think lenses belong on COBs in the growroom.
 
giantsfan24

giantsfan24

Well-Known Member
So...

Was there ever a consensus about what monos would be best to supplement white cob's for flower? My thinking was that if add them to the heatsink on their own circuit and turn them on and off when I needed them if have a dual purpose light. Then perhaps instead of 3500's, go up to a cob more blue heavy for veg. (Maybe I'm thinking too much like an HID grower?)

I read the entire thread... You guys are a crack up lol. Most of the important threads usually go the same way... Great, great info followed by bashing followed by videos then trolls like me getting to the party late asking questions that may or may not get answered.

This is by far the best site I've ever been a member of. You guys rock!
 
frica

frica

Well-Known Member
giantsfan24 said:
So...

Was there ever a consensus about what monos would be best to supplement white cob's for flower? My thinking was that if add them to the heatsink on their own circuit and turn them on and off when I needed them if have a dual purpose light. Then perhaps instead of 3500's, go up to a cob more blue heavy for veg. (Maybe I'm thinking too much like an HID grower?)

I read the entire thread... You guys are a crack up lol. Most of the important threads usually go the same way... Great, great info followed by bashing followed by videos then trolls like me getting to the party late asking questions that may or may not get answered.

This is by far the best site I've ever been a member of. You guys rock!
Click to expand...
Far red and/or UV-b monos seem to be the only ones used alongside white COBs.

Far red because some people believe/believed that it will further aid the Emerson effect because they think/thought that 3500K Crees or 3000K Crees don't have enough far red themselves, but I seriously doubt that it's more than a placebo since so many people have gotten great great results with just 3500K Cree cobs.

UV-b is certainly no placebo since those COBs don't radiate UV.
 
bicit

bicit

Well-Known Member
frica said:
Far red and/or UV-b monos seem to be the only ones used alongside white COBs.

Far red because some people believe/believed that it will further aid the Emerson effect because they think/thought that 3500K Crees or 3000K Crees don't have enough far red themselves, but I seriously doubt that it's more than a placebo since so many people have gotten great great results with just 3500K Cree cobs.

UV-b is certainly no placebo since those COBs don't radiate UV.
Click to expand...
Who's running UV-B mono's?
 
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