Nerite snail shells are dissolving

[Mrbocheeta]

I keep my planted tank around 7.3 ph using co2 for the plants. How can I raise the ph without raising the co2 dosage? I have freshwater clams that are being effected too. I've searched and found adding calcium will help. Thoughts?

 

[Rivercats]

You need to test you KH and GH if they are too low that is the problem. If I remember right I think I had read awhile back that snails needed a GH/KH of 4 (I'd check this out to verify since I'm going from memory). I know they can't be kept in too soft of water or that happens. I monitor my GH/KH because I have a organic soil substrate (alot of peat) and I keep various nerites. By doing a 50% WC weekly I keep my GH and KH at a pretty constant 4.