Thanks Heidi! The only tankmates they have are two african dwarf frogs. That way I know everyone gets their fair share of food, without becoming a meal themselves.
Chrissy there are so many foods they enjoy. Did you see the link to the food list I posted in another topic? If not I can post it here for you.

Yep red and yellow bell peppers are a fave food of theirs. I just boil it a while until really soft...by the morning, there's nothing but the skin left.
Hi FC! I just buy calcium tablets in the vitamin section of the pharmacy....like Caltrate or even a generic brand. It slowly dissolves into the water, and they like to munch on it too. It's a little messy, but they enjoy it.