Distance from lights?

I have a small grow cupboard only about 3 foot high, , Wanna get a 150w HID sodium lamp in there. On the FAQ it says 100 to 200 watts should be heard about 2 foot away from the plant? Is this true? Can I reduce this distance?


Thanks for your help

Why not use CFL instead of HID.

in that small of a space your gonna need to ditch HID... go with CFL'S and LOWRIDERS, thats the only thing i see possible...

Im using a 125w CFL at the moment for my vegging, But ive read they are poor for flowering? Is that really the only option?

if u keep them too close u will burn ur plants.

go with CFLs for small spaces.

and secretan, they arnt poor. they arnt as good as HID but go to the CFL forum, theres some nice buds being produced with CFLs there. im also flowering with CFLs, check my grow if u like

Okay, cheers, will do. Grow lots good btw

I do not think CFLs are inferior. I believe most people do not understand how to use them. I like them very much.

Go to a grow shop and pick up a cheap $25 light meter. Keeps the plants at 6500 foot-candle regardless of the light source.

if it makes your skin uncomfortably warm it will burn your plants.
i was growing 1 plant in a box 2'x3'x4' under a 70 watt hps security light.
light is perfect for one plant i have the light about 1 foot from the plant with no problems. but its only 70 watts. I wouldn't do that with a 250 or 400watter

Thanks for all the advise guys, Ive got myself a 200w CFL for flowering cant wait for my stuff to flower

how close should the yellow clf's be from the plant

josh878 said:

how close should the yellow clf's be from the plant

Click to expand...

cfl's should be 2-3 inches away.
i use cool white bulbs for veging and soft white for flowering.

josh878 said:

how close should the yellow clf's be from the plant

Click to expand...

Nature seems to understand this better than humans do. The plant will actually grow around a CFL. It will get close and burn itself a little and then back-fill to catch lumans.

I have made small verticle lamps. I move four pots together and set a lamp in the middle. The plants surround the lamp to capture the side light. I also use top light.