Light
- Thread starter jastoned
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luvvin growin
Active Member
NO.Not nearly enough lumen output from that bulb to help you.CFL,flouros,and HID are the only way to grow.
communistcannabis
Well-Known Member
yes you can, obviously there are better suited lights for growing but yours will workish
luvvin growin
Active Member
ok,you can use them,but you are going to have some long,spiny plants with no real bulk to them,dont even waste your time.
TeaTreeOil
Well-Known Member
That's perfect. Probably 70 lm/W. most CFLS are under 65 lm/W, especially as wattage increases the efficency drops. Though more small bulbs will produce much more heat due to all the ballasts.
TeaTreeOil
Well-Known Member
Yes. Far from ideal. Not a good idea at all.
luvvin growin
Active Member
yeah,probably not a good idea,most draw more heat than produce light.....
jastoned
Member
how many lumens would i need per plant?
TeaTreeOil
Well-Known Member
Depends how big your plants are.
Figure a minimum of 13 watts(CFL's actual wattage!) per cubic foot.
jastoned
Member
so how many lumens per cubic feet?
luvvin growin
Active Member
plant life has been shown to produce the best results with 3,000 lumens per square foot or more of light,any less will still produce results,just not what you may want.
luvvin growin
Active Member
sunlight is considered to burn at an average of 10,000 lumens per in the summer months.So try to get as close as you feasibly can.
TeaTreeOil
Well-Known Member
Lumens are for humans. A bulb can have a very high amount of lumens and be very poor at growing plants.
Plants need specific frequencies of light to grow the best. This is measured in watts. So I use watts. Fluorescent bulbs designed for plants(Gro Lux, Plant/Aquarium, Blue/Red, etc.) actually have very low luminous efficacy, as little as 20-30 lm/W. But the plant-usable watts are much higher than other fluoros producing 90 lm/W.
13 watts of CFL is around 900 lumens. This is, again, the minimum suggested. Lumens are related to the wattage by lm/W (lumens per watt), and this is termed the luminous efficiency(or sometimes termed efficacy).
luvvin growin
Active Member
true that,it doesnt mater as much as the spectrum of light the bulb produces.Thats whats really important.