Planted Tank Obsessed
Join Date: Aug 2004
Location: Mercer County, NJ
My tank is 3.6 wpg. My rotala turns red. I keep mine thin out instead of a bushy look. Also, the closer it gets to the light the redder it gets. So I would think that maybe your rotala is too bushy and they are fighting for the light. But it's green from the roots to about 4-5 inches up.
My stellata turns red when I have a lot of micros in the tank. When it turns green, I know my micros are too low.