MY CHEATO IS DYING

[papijames]

Hello there,
Slowing the cheatos in my sump are turning from red to a reddish color. are they dying? what am I doing wrong?
I'm using one of those energy saver CF light bulb 13w=60w output, and it's on a timer from 10:30AM to 9PM. so let me know if I need to upgrade the light, let it on for longer hours, etc.....

PS: I was doing a little experiment and did drop 1 bottlecap of liquid calcium reactor directly in that sump.