My water is hard, ph 7.8. Although I know Betta fish can do okay in a ph up to 8, I really want to optimise my fishes water. I have read that fin rot seems to be more prevalent in hard water, something I want to avoid at all costs! Also, I constantly battle thick lime scale deposits on the glass & filters - it builds up within days & makes my tanks look pants. I feel like it is ruining the hobby for me - so much time being meticulous about scaping a tank, and then white splodges and thick scaly build up everywhere. Made worse by the fact that I have spraybars on all the tanks, so water splashes on the glass. So what are my options? I bought some peat balls wrapped in mesh, off e-bay -the man that sells them says put them in the tank filter area. They are really good quality peat, lovely rich stuff that must be loaded with humic & fulvic acids etc, but will peat help with the limescale build up? Will peat cause too much of a fluctuating ph ? For example, what happens when I do water changes and top ups with the hard water, will this cause issues, or do fish adjust to the use of natural water softeners? The instructions for the balls say to just squeeze them a little at every water change. It seems easy enough but is it safe? I could go 50% RO (bought from the LFS)with 50% tap water but it is quite costly and the hassle/space factor of keeping the mix in containers ...mmmm, I'm just not sure. Does anyone else do this & is it worth doing in your opinion?