im doing 2000 as well. the people at the grow store arent always right and some times absolutely wrong. when i asked them about co2 they told me to run it at night! they also said my air cooling wouldnt work on my lights but it is hard to keep my temperature up now that they are air cooled. all plants need co2, whether one or a hundred and it will make fatter nugs and speed harvest time. check out my nugs at two weeks into flowering. thanks for the props. peace
santacruz_organic Reviewed by santacruz_organic on . SSH UPDATE (PICS) I got some good news, my plants are out of shock and growing rapidly. I started my clones, after they rooted, on Oct. 1 and for the first week and a half i had no growth due to shock. this probably happened due to over lighting (from cfl's to 2 1000w) or from nutrient burn. at first i was worried but then i realized i was just an impatient stoner. now my plants are growing almost an inch a day and have A LOT of node regions. It is my first time using HID lights and they are working better then Rating: 5