Can someone please tell me what I need to do I've been reading all these post and looking at pics but I think maybe a iron deficiency?? But some of my plants have a mix of fox farm happy frog, oceans, and the one red bag, then others have just happy and some have just oceans. But all plants are yellow at the tops... I'm running a 5x5 tent 3 led panels 3w per light 2 120w 1 240w temp stays between 69 59 45% humidity . And I water with tap water ph ed at 6.8