i have my alge eaters in my 55 and want to move them over to the big tank so i acn use the 55 for Quarantine. They need the room. I have 6 SAE in there and one of them is always so skinny even thopugh i feed them all of the time. He has been that way for years. I am hoping the increased room will allow him to get away from the others and gain some weight, poor thing. All of the others are fat. But I will supplement their diet.