I have hard water (not quite sure how hard, but any attempt to lower the Ph is in vain) with a Ph somewhere around 8.0 (again I am not sure of the exact level since I bought a normal-range Ph test kit and the water is darker than the darkest blue).
What type of test do I need to determine the hardness of the water? I know I also need to get a high-range Ph test kit.
What kind of tropical fish do well in such high, hard water levels? I have a 55-gallon tank that currently houses a female betta, a male swordtail, a young angelfish, 1 cory cat, 1 giant danio, and four zebra danios. I have lost 2 angelfish and five swordtails already, and I think it has to do with the high Ph.
I know that cichlids like hard water with a ph about 7.5 or so, but the only cichlids I really like (besides angelfish and discus, LOL) are oscars.
Are there any other types that would mesh well with my tap water?