Little update, finally had to feed a couple of the 5 gallon pots. I used: Botanicare Original Blend Grow at 10ml, Liquid Karma (humic/fulvic acids) 5ml, DynaGro Silica 1ml, Superthrive 1ml. You can see in the canpoy shot that a few plants finally got hungry, they seem a few days behind but I'd...