I have a 150 gallon and want to know what i should use to control the green and brown algae. My stock is a Oscar (12"), Dempsey(8") Firemouth (3") Sydonitis catfish(3") and a Fire eel(16"). Im worried about the fire eel because ive read that the plecos will maybe harm the fire eels slime coat. I don't know if this is true but would like some ideas for what you may have in with your eels or even stingrays. What do you think?