This is now occurring on 2 of my plants. At first I was under the impression it was localized to the one plant's tolerances, but now I'm seeing development of the same symptoms on a separate strain at the same age. So it's definitely my fault. I've been running well for months, this is my first major issue I've been unable to resolve. Major Symptoms: - Chlorosis in stripes on the leaves between veins. It starts from the outside of the finger, first visible on the bottom of the leaf, directly between the veins, in the flesh and eats out like a canyon eroding. - Affects all ages of leaf, old and new. - Remaining leaf is healthy green - Minor physical distortion of the leaves, new leaves ascend, older ones descend. - Roots not rotting or souring, proper drainage. - Recent progression observed, possibly eliminating the possibility of toxicity (with >1wk of water+molasses only) and increasing likelihood of deficiency Stats: Strains: NYCD (S/I) & Sadhu (I/S) RH: <20% RT: 76-85F PH: 6.8 - 7.2 Water PH: 7.4 Soil: FF OF Nutrients: FF TigerBloom | FF BloomBig | Bat Guano | Molasses Previous Feeding: "every feeding" amounts + 1/2 feeding 0-10-0 guano Schedule: Previously, was on heavier doses, but this was now weeks ago. I certainly think it's a deficiency, but it's possible it was an overload of something a few weeks ago that is simply temporally diffused or systemic. Light: 12/12 HPS @ 4ft.+ to canopy My PH is high and I'm going to try a PH down technique today to adjust it down to 6.5, but it doesn't seem high enough to cause a complete lock out. Please correct me if I'm wrong. My diagnosis has been that my Mn is too low or being locked out by another nutrient (still learning the counter-balances of nutrients). Please, all information helps.