your problem is your ph I also grow with coco and use ghe trio ...lol just stole this off one of my other posts lol to save time.......GHE trio series .. during the flowering period use a 3/2/1 ratio, 2 micro / 1 grow / 3 bloom ,so eg in 10l 0f water its 10ml of micro , 5ml of grow ,15ml of...