ok first thx for all the info and after thinking about this and checking out tanks i want to have saltwater in my room and move my cichlids downstairs into a bigger tank, thinking about plywood tank but looking into sealers right now. I checked out a 75 at petsmart today 200 bucks and i picked up one end and its was heavy thought it was me at first so got my friend to do it also and he said heavy and i said no to wth weight plus stand,water, sand, rock the weight keeps coming for being upstairs so kinda changing question any ideas as to small eels with colors?