I've been growing for close to 10 years off n on. at the moment I have 25 I believe dream queen & 1 gorilla glue, & 2 grand daddy purp. i am using House & Garden nutrient line. i an currently in my 2nd week of flower. also, this is my first full run that i have cO2 running. take a look and let me know your input. i have attempted to hook up a feed line using 6" halos to each plant. there sunlight is 4 1000 watt HPS & 1 1000 WATT GAVITA. . ..