Hi all, I have two species that have puzzled me. I first noticed older leaves getting pale and chlorotic mid 2021. I initially suspected a nutrient issue, and it still very well could still be that, as my 2021 growing season I wasn’t entirely consistent with fertilization. Starting in February 2022, I’ve been regularly using MSU at 0.25 tsp per gallon to provide roughly 50ppm Nitrogen and water mounted plants every other day. PH is adjusted to 5.5-6 I started fertilizing more regularly as the Aerangis distincta was growing it’s leaf first new leaf of the season. The leaf started nicely green, which was encouraging, but now that it’s matured and new leaf is emerging, it too is starting to develop a pale character. It’s as if there isn’t enough nitrogen or chlorophyll to go around. 1. pale older leaves 2. First leaf of the season - started growing in February was nice and green now demonstrating some fading 3. Current leaf that’s growing Aerangis arachnopus showing similar Any advice? Is 5 months of supplementation not long enough to see results? At one point I also suspected too much light, but I don’t believe this is the case because they are growing in shade, and even the shaded parts of the leaves are pale. I started supplementing with a bit of magnesium a few weeks ago. However, with these species being generally low-nutrient requiring plants, I’m a bit puzzled by all of this. Am I being inpatient and should carry on as is?