Coco p is the only thing I use. What I found works for me is mother earth 70/30, GH trio, calmag, pH as needed. Calmag is very important. At startup only, 60ml/gallon, for a 3 gallon pot, about 1.5 gallon of pH'd water with the calmag, then dose by the GWE chart. I feed with nutes every day...