If you wanted to do Cardinals, you could always mix in some distilled water to bring the gh down to moderately hard. I know distilled it generally a big no-no, but in the links bayst posted above, some people do this with their Sulawesi shrimp, as the lakes the shrimp come from are very, very low in nutrients and dissolved solids.
But yeah, watch my 10 gallon thread I visit Wisconsin with some frequency, so we could meet-up and I could hand-deliver some cardinals if mine breed!
But yeah, watch my 10 gallon thread I visit Wisconsin with some frequency, so we could meet-up and I could hand-deliver some cardinals if mine breed!