I know using hydro setup ideal PH is 5.5-6.5, with your PH at 5.5 the nutrients could be absorbing too slowly? I've heard of some situations similar and bumping the PH a couple of points helped. Anyways just a thought, may be the situation maybe not.
Tetrahydra Reviewed by Tetrahydra on . helllpppppp meeee can ne1 help me? my plants are about 4 weeks old now and all of the bottom leaves are turning yellow quickly,my ph is 5.5,im using a hydroponics kit with a 400w grolux lamp,rockwool cubes and i have a fan on so they are not burning , but im using "power-gro" nutrients,the bottle says it has nitogen in it so can ne1 tell me what im doing wrong?am i using the wrong nutrients? Rating: 5