I went to the local hardware store and picked up a inline fan which does 500 cfm. I have a small duct which runs from my window to a exhaust tube which runs to the top of the grow room. I hope that the exchange of the air will help with the yellowing. I will keep everyone posted in the next couple days with pics and such to see if they perk back up and start to shoot again. Thank you for the help Baldy!!!
tikigod80 Reviewed by tikigod80 on . If someone can be of some assistance I am in the 6th week and I am at a loss in this grow cycle. At the moment I have a 6 plant eco grower unit with a sylvania 600 watt grow hps bulb I have the homeboxXL and a digital ballast. About 3 days ago I noticed yellowing starting to occur. But before the yellowing had begun the plants were in great health. So far I have done everything in my knowledge to fix the problem. I had talked with various people and they had said overewatering but isn't that impossible with the system I am using? Rating: 5