I do suspect macros and am considering switching back to every other day dosing with excess. My goal with the current dosing was to maintain lower N for color from my other plants, and this is working without stunted growth or small leaves with other species. My numbers above for macros and traces are the input, not target/measurement, and is roughly half of my leanest successful dosing under EI.

I will make your suggested changes and observe. I will start with ~10-12ppm NO3 and ~1.5-2ppm PO4 every other day while continuing to adjust CO2.

However, I am surprised I see this in L. Guinea but not other species. I suspected Ca:Mg because many proponents of a ratio point towards stunted new growth, and many have grown L. Guinea. This is my first time growing this plant.

Thank you.