Is there any for sure source of calcium so I know Leo is getting the right amount? I have cuttlebone in there and I have seen him/her biting at it but I don't see this very often and I want to make sure s/he's getting the correct amount of calcium.
Also, I'd really like to get one of those sucker fish that suck on the sides of the tank to clean the algea and waste but I'm not sure if I should for fear that Leo will hurt it or it will hurt Leo! if I get one that is a little bigger do you think it would be okay?




