Have you grown in coco before? It's like hillbilly hydro I've did this in rock wool and it didn't dry out right When you throw these out look at your roots you wanna have roots the whiter the better thicker the better if your roots are looking brown~n~slimmy and really thin like hair this means it's not drying out right and are being overwatered. I would switch to dirt if you have good roots and they're not the issue I would be thinking nutes disorder wrong ppms or ph are you using meter to measure you nutes ppm and ph this is HIGHLY recommend~