Looks like a calcium and magnesium deficiency. Are you using r/o water? If so you will need to supplement with cal/mag. FF nutes do not contain much of either. There was a day when Big Bloom had enough. But these days its watered down and a waste of money IMO. Your better off brewing your own ewc tea. Next grow be sure to include dolomite lime and ewc in your medium mix and you wont have to worry about cal or mag deficiencies or adding cal/mag.......


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