I think i found what causes the problem to the plants, even with correct PH and feeding schedule. Today, when i was about to water my plants i found a brownish fly sitting on the soil of one of the damaged plants. I killed it, and tried to investigate the coco and when i dug deeper on the sides, i found white little moving larva there. Gotta be fucking fungus gnats -_- Nevermind the anti-parasites bacteria in the Canna Coco Plus...overpriced shit. How should i proceed? With what should i treat my coco to get rid of this fucking assholes?