My first three grows were on FFOF and okay. I’m using a 3x3 tent with Spider Farmer SF-4000 light and an in-line fan with charcoal filter. Decided to try coco and grew a Lemon Ak auto that was beautiful. Used distilled water and General Hydroponic ferts. 3 gallon fabric pots on screens to keep them from sitting in water. Perlite. I followed the directions for feeding provide by the fertility company. Halfway thru the grow, all the leaves started turning yellow. I had about ten nice buds. I thought maybe it was turning yellow due to drying out, even though the coco never got dry. I decided that watering more often would help, so I switched to twice a day, always with plenty of runoff. When I harvested, although the buds were big, they weren’t fence. More like fluffy. Very disappointed but I had learned in the first grows that I could grow some very good stuff even as a rookie. I’d like to try coco again but would like some input as to why the yellow leaves and fluffy buds. I wish I’d saved some photos but I have to be careful in this backward state.