I've always had good results with ocean fox farm until this run myself. In the past I would just upgrade pots as they grew with new fox farm, water and Wala!!! This run I'm having spots on my leafs and slow growth. Nothing has changed in my program I have 40 plus grows under my belt. Something definitely has changed with the batches I received, maybe its something on my end......... I'll do another run with the fox and see how it goes.