Mg and/or Fe deficiencies

[AnonYMouse]

Cym Ladye: I initially thought that and put it in appropriate light. Its lightening, not greening.

Above is the most pronounced chlorosis. The lightening progressed since I took that pic. That leaf isn't mushy soft but tender/delicate compared to others.

The supplement was easier than above. I picked up CaMg+ at the hydroponics store.

because this is the replacement for the one that rotted out before I looked up the culture.

Thanks all.