how far from plants?

Ive got a 150 watt cfl lumewing......I plan on starting out 20 plants with this. How far away should the light be from the tops? I hear it could be 1 inch, whats the facts? Thanks

as close as possible with out causing heating problems

hazemaster said:

Ive got a 150 watt cfl lumewing......I plan on starting out 20 plants with this. How far away should the light be from the tops? I hear it could be 1 inch, whats the facts? Thanks

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You plan on starting twenty plants with one CFL?

Are the twenty plants in twenty individual pots?

I'd say it's fine for starting them but you'll need more when you start getting height.

Usually you can put them fairly close, if temps are low, it can be fine enough to put them close enough till it is almost touching the leaves.

But 1 inch away is where everyone ends up.

Thanks alot....Ill prolly stick with the 1 inch rule just for ehat issues. And yah i planned on growing them until there 6 inches tall the switching too MH.

20 6 inches, i doubt it will be strong enough light.

Yea maybe 2 of those might work, 3 would be good.

yeah i only got 4 under a 250 so i think its pushing things a bit.

if its it too hot for your hand, its too hot for the plant. with a cfl tho you should be fine, one inch should be fine.

You'll have to measure canopy temp. you can get a 5$ thermometer almost anywhere with a wire connected to a sensor you could hang to get an accurate temp. if your room's temp is around 75 where it should be the canopy CAN go up to 85 MAX its reccomended at 75 but I know people who keep it around 80 give or take a degree.

So the answer is, as close as you can do keep in mind the closer you have it to the light the more rapidly it'll grow, constantly raise your lights WITH your plant to avoid heat stress and burning.

here ya go