im new to this site and was wondering what i should do with my 72 bow because i just got rid of my cichlids ...Right now i got 7in tiger datnoid, 10inch fire eel... I was gunna get two teacup sting rays for my tank.. I got a sand bed and im running two ehiem canister filters and in a separte tank i got 3 small indo datnoids but they are too small for the 72 cuz the big dat would eat them......Thank you.