The idea is to get your lights as close as possible with out burring your plants. That is why you have a temperature probe to installed at the top of your canopy to monitor the temperature under you light at the top of the plants. That way you don't burn them up from heat and they get as much lumens as possible even the lower parts.
Zandor Reviewed by Zandor on . looking 4 advice I'm new here so take it easy on me. I'm setting up a room so I can help some friends out and myself with medical use. I'm going to use clones so that is covered. I'm not going to use hydroponics but the standard way as I like to think of it in a 5 gal pot. I've done a lot of reading and it seems the best is a Metal Halide1000w ballast with a (blue) 1000w blub to veg. the plant and I'm looking for a 940W conversion blub to flower. I know lots of blubs use the same technology in making them but I Rating: 5