Quote Originally Posted by Splifted
Also, how high do you have your light above your plants? We started off really high, but now its only like 2 feet maybe. The closer the better, cause you lose like 1/4 of the lumens for each foot. Like a 1kw at 1 foot is 135,000 lumens, at 2 ft is like 45,000 lumens. They had a nice little chart in the grow bible showing how much intensity drops with distance, its crazy.

Light intenstiy = Total Light Emitted / ((4 x pi) x (radius^2))

And light intensity decreases by 1/x^2 where

So like if you have 135,000 lumens at 1 foot, you increase that to 2 ft, you it would be 135,000 x 1/2^2 which is 1/4 so basically one fourth of 135,000 = 33,750. Crazy huh? Thats why the top bud always is so big and the bottom ones are smaller, cause they get a lot less light. LST'ing takes that problem away, preventing you from having like 5 feet from the top to the bottom of the plant.

So thats the science behind bigger buds lol.
hey bro, just moved my light to 2 ft from the plants! it was probably about 3.5 feet before, hopefully they enjoy the extra lumens! Gonna start to LST train probably tomorrow or next day! I think a few of my plants are ready, I want to see how they respond to the closer distance HPS first.

What type of air ionizer do you have, are you using active charcoal at all? Thats the next thing on my list to do, odor control!
PatSajak Reviewed by PatSajak on . First grow log - 2-3 weeks into veg, need advice (pics) Hi, my first time indoor grow! I've been vegging under 4 fluros and 4 cfl's for a few weeks, they haven't been growing too fast, but I am happy with the way its going so far. I just transplanted most of my smaller plants into bigger pots, and switched it to a 400w HPS, with the 2 fluros on the sides. I'm able to maintain decent temperatures and have been keeping the lights on 24/7. I've been using FoxFarm Ocean Forest® Potting Soil (which has earthworm castings/guana/fish/crab meal), and Rating: 5