I used HP Pro Mix. Which has coco, peat moss, wetting agent and mycorrhizae. I used 5-5-5 all purpose dry during veg. Prior to flipping to flower, I flushed to rid the 5-5-5. While flushing, the PPMs were at 2000ish. 2000 is including the tap PPMs. I got it down to roughly 800ish. I bought some...