Kei,
I've used the same bottle of bettafix since February. I just bought a new one, but still have about 1/2 bottle left from the first one. A little bit goes a loooonnnnggg way.
Best wishes to your beauties. We're on the verge of a water shortage here, so I understand what you mean about the quality. Do they sell the water filter pitchers like Britta there? That might help a little bit. <img src="/images/graemlins/confused.gif" alt="" />
