I have a 40 gallon and I would assume its semi mature. Sometimes I have water quality issues but I think thats more user error than fish tank issues. I really would like one but at the same time I don't want to starve him later down the road and have to scramble to be feeding him 24/7. I'm breeding brine shrimp, pods, and mysisd already so I could supplement once every few days also. IDK maybe I can do it.