No co2, high light,ferts? Lack of co2 is probably why
Other than the Co2 the next problem I see is your lighting. The actinic while I'm not a fan of it can stay to maintain the cool look but you will need to get rid of the 12K lamps and get lamps within 5000K~8K range if you are after healthy plant growth.RTC said:i have 260w light with 2 x 12000k and 1 x 6700k bulb and 1 x true actinic bulb.