ok, thanks alot I had no idea about that, I will get rid of the protector on the one powerhead and I'm thinking of getting a nano-- will that be good??? I do about a 4 gallon water change weekly. Is that enough? and I think the water is good, it's from a RO filter from outside of weis. I think i'm gonna look into buying my own. I think some of the problem might be overfeeding, I'm still trying to get used to the amount I should feed the fish daily. And I need more hermits too, though IDK if that would help! Any other suggestions are greatly appriciated!!!!!!!!