my brother has a tropical tank, a cichlid tank, and a turtle tank and has snails in all 3 of his tanks. though he doesn't do much research they are all doing well in each tank and keeping them crystal clear.
my question is can they actually work well with goldfish? i know goldfish are very dirty but they are always trying moving rocks and trying to find food. I'm worried that if i put snails in, it will keep it took clean for the goldies. thanks.