^ Hard to tell, I believe new and old are affected.
The leaf size are really small, I believe I might have too much light raining down on them.
Tank is a 6 gallon with a desktop lamp position 2 - 3 inches above the surface. Nitrate is about 5 - 10 ppm, I try not to let it go pass 15 ppm because I have some shrimp.
How much K and iron daily do I dose? I been doing 1/32 tsp of K daily, Seachem iron at 1 ml daily.
Maybe it's too much ferts and lights?