:rasta:We have recently switched to Canna coco as our grow medium. I have been reading runoff ppm and it seems that some folks have stated that runoff ppm readings for coco are quite inaccurate. Does anyone know why this might be so? It turns out we had been starving our new clones, probably because we, like most growers, were over-feeding. We feed at 400 and our runoff readings are between 190 and 270. Any thoughts, please? Thanks!
