It seems you are banging your head against a brick wall here. All suggestions are pretty much incompatible with your hard water. Some are borderline maybe, but why would you risk the fishes future health?
I'm going to throw something into the mix here, and I had to go through the whole thread to make sure they haven't already been suggested, which they haven't. Why don't you change continent completely and at least research some Africans?
I'm going to throw something into the mix here, and I had to go through the whole thread to make sure they haven't already been suggested, which they haven't. Why don't you change continent completely and at least research some Africans?