for my snails I use a small bit of cuttlefish/cuttle bone weighed down and my snails do actually eat it (people say it jsut dissolves into the water) - mine dissolves and gets eaten. I was also recommended crab cuisine for the snails - its made for crabs but has lots of calcium in to make nice strong shells. Well I bought one packet to try it and the snails love it (as does my now-podgy fish). I'll definitely be buying more.
Thanks for the suggestions. I dunno which to try now lol. The tums sound good but would that hurt my fish? The crab cuisine sounds good too will prob get that. I'm not sure on the cuttlefish now? Should I or shouldn't I?