TheTenthDoctor
Fish Herder
Yeah I agree with @AJE since when does a betta not belong in a 10 gallon? Also whats wrong with 2 platies in a 10 gallon? Oh and I'm going to the petstore today to get my water testedMost of the fish in your list don't belong in a 10G tank, regardless of gh or kh...tank size is too small
You need to be testing your own water, with one of these: https://apifishcare.com/product/freshwater-master-test-kit