So I have it around 20 I think, I can never tell with those color changing things, it looks pretty orange to me though, get far redder when placed against white. I am guessing that is a low as I can go with all the cichlids in the tank, as I really cannot grow plants with them. My plan would be to move the eel and a whole lot of plants, it would just be the eel in the tank with all the plants. Is it safe yet to do the switch?