My tap water has a pH of around 5.5(I tested today) I am debating on artificially raising it or just letting my fish get used to It. The tank is going to be a cichlid community with pretty hardy fish so I don't see how it would be too much of a problem, I just need to know if it's so low that it would hurt my fish or if it's acceptable. Also, I plan on doing a salt tank too, I'm pretty certain I'm gona have to artificially raise the pH in it beacause saltwater fish and corals are much more sensitive to pH but the salt tank will be much smaller than the freshwater 180 and it will cost a lot in chemicals(I also heard you can use baking soda to raise pH but that seems like a bit of a hassle) to raise the pH in. also my tap water comes from a well. So I don't need any of that water conditioner stuff to counteract chlorine.