I think a good rule of thumb is 1 and a half to 2 and a half pounds per light bone dry. I usually get 2, but if you really know your stuff you can get 3. I have heard of growers getting a gram per watt but you really need to have it tweaked pefectly. Good luck on your grow and stay safe!

TGT
Tom Green Thumb Reviewed by Tom Green Thumb on . 4000-5000 watt grow? Real quick background. I set up a 3000W grow almost 2 years. It was an aero system. got through the cloning process, sexing and I think into the flowering process. But then I hit a snag and never finished the grow. FYI, dont leave hoses on and flood your space. So now I have a new space which is more secure and fool proof. I have calculated that I can use about 5000 watts of lighting to keep my electric bill in check. would I be better off using 5 1000watt bulbs or would it be better Rating: 5