I grow in happy frog with GH nutes. From my research on line I think my plants have an Iron deficiency or a Nitrogen deficiency. I ph my RO water between 6.8 and 7.0 how can I correct these deficiencies?
I would try Cal-Mag plus, especially with RO water. It contains calcium magnesium plus iron. The N-P-K is 2-0-0 (2% nitrogen). This should be enough to get your plants on track. Also there are other nitrogen only supplements; Nitrex is in the Organicare line by Botanicare. Another good organic Nitrogen is Nature’s Nectar Nitrogen. Another thing I like to do is give my plants more of a pH range from 6.3-7.0.