Ok, I got some generic tums (equate brand) for my snails as a calcium supplement, tossed one in the tank, and the dojos had a field day with it. I think about half dissolved into the water, but the dojos gobbled the rest down before the snails could get near it... so, is it safe for them to eat? I would assume it is if it's safe for snails, but I just want to be sure.