I've been nudging my lighting levels up very gradually, 1% at a time. Its currently around 55% and the stems are a nice red, but the leaves are still yellowish-green. I may have to experiment with more root tabs and a little less water column dosing to get the leaves to change colour? Osmocote isn't available in my country but the Japanese version Nutricote (branded as "Dynamite" in USA) is available so I plan to get some as I have other plants that are struggling.
