how many 42 watt cfl's?
- Thread starter GanjaKing
- Start date
420bugmenot
New Member
depends how big of plants you are growing.
the sky is the limit. the more light the merrier and you're going to have a hard time "overdoing" it with CFLs. The limit is when you realize what an idiot you are for spending the money on cfls when you could have spent a few more dollars and get a real light, and you wont even be able to use those cfls for home lighting in most cases because they are too big.
the sky is the limit. the more light the merrier and you're going to have a hard time "overdoing" it with CFLs. The limit is when you realize what an idiot you are for spending the money on cfls when you could have spent a few more dollars and get a real light, and you wont even be able to use those cfls for home lighting in most cases because they are too big.
glockstar21
Well-Known Member
On average you need 3000 lumens per square foot for marijuana plants. A 42w cfl like you have produces 2800 lumens if I recall correctly from the package. I would think you would be ok with 4-5 of them if my calculations are correct. It's a florescent so use as many as you can get in your grow space keeping them a couple inches away from the plants as those bulbs get hot.
The general rule is 100 watts per plant so in theory it would take (3) 42 watt bulbs per plant. SO 9 bulbs should do it.
However, if your plants are tall you may need more than 9 bulbs in order to provide side lighting for a good yield.
You can never have too much lighting or too many CFL's.
However, if your plants are tall you may need more than 9 bulbs in order to provide side lighting for a good yield.
You can never have too much lighting or too many CFL's.
iwanabahordaculturalist
Member
Hi. I have a small 2foot8inch by 2 foot 9 foot tall... I have a mother elsewhere... now I want about 8 small clones less than a foot then I will flower.. say 8 to 10 inch clones n 1 gal pot how many 42 watt actual. Cfls would I need for a good veg and flower thx