OVERKILL LUMENS??? What do you think?

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npcghost

Member
I have a dresser im working on. Inside Dimensions are about 15''Dx28''Wx39''H. SO.....I will have just under 3 sq. ft of space to work with.

I am trying to decide between a 150w HPS or a 250w HPS for flowering.

The 150w will give me about 5300 lumens/sq ft. The 250w would give me right at about 11,000 lumens/sq ft, depending on the bulb.

Would the 250 be overkill for this space?

If I use the 150 I would probably try and throw in a couple 2700k cfls.

Let me know if you need any additional info.

I have a 190cfm inline fan and plan on makin a diy carbon filter. I know the fan is overkill for a space of this size but I will get a fan speed controller and tone it down some.
 
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npcghost

Member
ya im not too worried about heat. I will most likely be making my own cooltube or just buy one.

I have seen some bleaching before with too much light. And than I recently read something that plants start to do some weird shit after a certain amount of light is used.

here I linked where I read this. I just kind of skimmed over this but I dont really understand the whole "saturation" thing. 2nd post down I think

https://www.rollitup.org/grow-room-design-setup/101350-max-lumens-before-growth-rate.html

Do you think the 250w would produce a greater yield worth the extra cost of the light and electricity compared to the 150? Looking to try for 3 oz's. Any more is nice too. :)
 
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beer316

New Member
as much light as possible as long as you can control the heat. cant have too much light unless the plant isnt used to the intensity in which case you can slowly build it up. i know ppl that have plants that touch their hoods almost everyday. they're cooled so efficiently that they dont get warm at all. pretty expensive setup though. you can even do it with 1000 watters if you have a good enough chiller and water cooled hoods. man them buds get big and rock hard. even without co2. although adding co2 is better.
 
MysticMorris

MysticMorris

Active Member
I had a 400w + a cooltube in a small cabinet once and with a proper extractor I was sitting in the mid 80s heat wise. It was defo total overkill, but a 250 cooltube could be more reasionable in a small space.
 
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npcghost

Member
another one saying go for the 250 huh?

anyone else?

remember, I have about 3 sq ft of canopy space to work with in this dresser and the total height is about 39''.

The lumens per sq ft difference between the 150 and 250 is pretty big. About 5300(150w)-11000(250w)

I have read that around 5000 lumens per sq ft you have maxed out its growth potential without adding co2.

other thoughts?
 
Straightjacket

Straightjacket

Well-Known Member
I started with a 150, then I got another one, then I got a 400, then I got another one. now I use the 2 400's and the 150's are backup. git the big one. the buds git bigger. lol
 
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npcghost

Member
polyarcturus said:
ive ran 10,000 lumen setups, but with co2, if you run some co2 suppliment somehow, i would be worth it.
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Im trying to find a weaker bulb if I can actually. The one off HTGsupply is 35k lumens I believe. So it would come out to about 11500 lumesn/ sq ft. IF I could find a 30k lumen bulb that would probably be better. I dont really know. lol

I didnt even think of co2 cuz I dont have the money for a co2 set up. But I guess I could do a couple soda bottles with the sugar and yeast shit or whatever if that would help.

Hard to imagine that a bottle with some yeast and shit in it would really be beneficial in a space this small. But I guess with such a high lumen/sq ft it might be needed.

also----with a cooltube set up do you think the heat would be much different between the 150w and 250w?
 
polyarcturus

polyarcturus

Well-Known Member
if you got a small setup like a cabinet with a cool tube the temps should be fine so long as you use a strong fan(200cfm round about) as far as co2 the yeast thing will get the ppm up there in the 1500 rang it just requies some maintenance, i say you mess with the mycobags/ehale bags and just buy one or 2 once a month or however they work
 
ItsSaturday

ItsSaturday

Well-Known Member
npcghost said:
I have a dresser im working on. Inside Dimensions are about 15''Dx28''Wx39''H. SO.....I will have just under 3 sq. ft of space to work with.

I am trying to decide between a 150w HPS or a 250w HPS for flowering.

The 150w will give me about 5300 lumens/sq ft. The 250w would give me right at about 11,000 lumens/sq ft, depending on the bulb.

Would the 250 be overkill for this space?

If I use the 150 I would probably try and throw in a couple 2700k cfls.

Let me know if you need any additional info.

I have a 190cfm inline fan and plan on makin a diy carbon filter. I know the fan is overkill for a space of this size but I will get a fan speed controller and tone it down some.
Click to expand...
I had a setup just like this before and worked out great. Either way you need to make sure that you have enough cooling in there. I used a 250w HID when I did it and it was always really hot before I put in a cool tube... If you make a small DIY cooltub to put over the bulb and make sure to vent it well and you will be ok just don't let the heat get over 80-85 if it's made from partical board or it will fall apart fast. - Heat melts the glue they use then the fake finish falls off and the drawer will crumble. Anyway your heat level should be below 80 anway way. I found that 72-78F worked best...

Hope this helps. Good luck :-)
 
N

npcghost

Member
polyarcturus said:
if you got a small setup like a cabinet with a cool tube the temps should be fine so long as you use a strong fan(200cfm round about) as far as co2 the yeast thing will get the ppm up there in the 1500 rang it just requies some maintenance, i say you mess with the mycobags/ehale bags and just buy one or 2 once a month or however they work
Click to expand...

ya I have a 4'' 190 cfm MTNgearsmith fan. So that should be plenty of ventilation for a 10 cubic foot area....I think anyway.

I will def be investing in either a cootube or a diy cootube. I will probabaly just end up making my own since every one I see on-line is too long(around27''). I need a lil short cooltube. haha

I will look into those ehale bags.
 
polyarcturus

polyarcturus

Well-Known Member
dont wast your time with a cool tube, get a piece of glass cut to fit at lowes , then use silicon and a caulk gun to seal it to make a chamber for your light, make 2 holes, one for fan to exhaust and one for the intake,just for the light area(the light air is completely separate from grow air)

then, i assume your not using a filter, rig up your cab grow area with another fan, cheapie Axial could do the trick, to exhaust for an hour every 3 hours or so, what ever you fell comfortable with as far as your co2 system goes, if you dont use a co2 sytem just turn the fan on all the time. side note always turn the exhaust fan on at night.
 
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bde0001

New Member
npcghost said:
I have a dresser im working on. Inside Dimensions are about 15''Dx28''Wx39''H. SO.....I will have just under 3 sq. ft of space to work with.

I am trying to decide between a 150w HPS or a 250w HPS for flowering.

The 150w will give me about 5300 lumens/sq ft. The 250w would give me right at about 11,000 lumens/sq ft, depending on the bulb.

Would the 250 be overkill for this space?

If I use the 150 I would probably try and throw in a couple 2700k cfls.

Let me know if you need any additional info.

I have a 190cfm inline fan and plan on makin a diy carbon filter. I know the fan is overkill for a space of this size but I will get a fan speed controller and tone it down some.
Click to expand...
if u can control the heat that 250 is putting out in that small small area that plant or 2 is gonna LOVVVVVVE IT. thats a lot of light for that space...i can only imagine how bright it would be on the plant. definetly will be potent. if you have never grown before I suggest you look at preventing mold. The most common mistake I tell ya. MOLD
 
N

npcghost

Member
bde0001 said:
if u can control the heat that 250 is putting out in that small small area that plant or 2 is gonna LOVVVVVVE IT. thats a lot of light for that space...i can only imagine how bright it would be on the plant. definetly will be potent. if you have never grown before I suggest you look at preventing mold. The most common mistake I tell ya. MOLD
Click to expand...
thats pretty much a humidity thing right? too much moisture in the air causes mold?
 
cannabineer

cannabineer

Ursus marijanus
I would select the 150 and add a couple of blue (coral tank style) T5s to boost it.It's the same basic idea as dressing in layers, and this way you have a better all-'round grow spectrum. Add 50 to 100 watts blue and deep-red T5s ... cn
 
N

npcghost

Member
polyarcturus said:
dont wast your time with a cool tube, get a piece of glass cut to fit at lowes , then use silicon and a caulk gun to seal it to make a chamber for your light, make 2 holes, one for fan to exhaust and one for the intake,just for the light area(the light air is completely separate from grow air)

then, i assume your not using a filter, rig up your cab grow area with another fan, cheapie Axial could do the trick, to exhaust for an hour every 3 hours or so, what ever you fell comfortable with as far as your co2 system goes, if you dont use a co2 sytem just turn the fan on all the time. side note always turn the exhaust fan on at night.
Click to expand...
sounds like it could do the trick. But actually smell is a big concern. I am planning on making my own filter or just buying a small Phresh filter. I was also looking into the ODOR SOKs. BUt have read alot of bad reviews. Too bad cuz I like the idea of them
 
N

npcghost

Member
cannabineer said:
I would select the 150 and add a couple of blue (coral tank style) T5s to boost it.It's the same basic idea as dressing in layers, and this way you have a better all-'round grow spectrum. Add 50 to 100 watts blue and deep-red T5s ... cn
Click to expand...
I like it. I was thinking of doing something similar with cfls and a 150. I will be vegging with cfls so I figured I would switch to some 2700k's and still keep a couple 6500k's in there as well if I used a 150. My only concern with that is space. I think the dresser will be so tight with all that in there that the cfls will be blocking alot of the light from the hps. It will be easier to see how tight it will all be once I get the hps.
 
cannabineer

cannabineer

Ursus marijanus
A two-bulb two-foot fixture (48 watts) should fit well, without using much vertical at all. A four-bulb two-foot fixture would fit like a dream, with room for a coupla CFLs at each end. You have options to supplement or entirely replace the HID fixture. The "LED without LEDs" thread is very long but peppered with cool info. Your space is ideal for LED supplementation, but i don't know much about them ... apparently brand is important and the $/watt is high. But a blue-biased veg LED next to a 150-watt HPS sounds killer to me.

Or get an MH light, say 100 watts, ideal for veg, and supplement with red T5s for flower. A very power-efficient setup, that. cn
 
N

npcghost

Member
cannabineer said:
A two-bulb two-foot fixture (48 watts) should fit well, without using much vertical at all. A four-bulb two-foot fixture would fit like a dream, with room for a coupla CFLs at each end. You have options to supplement or entirely replace the HID fixture. The "LED without LEDs" thread is very long but peppered with cool info. Your space is ideal for LED supplementation, but i don't know much about them ... apparently brand is important and the $/watt is high. But a blue-biased veg LED next to a 150-watt HPS sounds killer to me.

Or get an MH light, say 100 watts, ideal for veg, and supplement with red T5s for flower. A very power-efficient setup, that. cn
Click to expand...
ya alot of options. Thats what im having touble with. lol

It just seems like it would be so much easier and less cluttered to throw a single light source above the canopy. But I do kinda like these T5's. Didnt even consider those. Can you get something that will convert these T5's to plug into a regular powerstrip socket???
 
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