Hi. I have a 55g planted tank (low light). My tap water isn't exactly
ideal for my community fish or my plants (pH about 8, GH ~250ppm), and I'd
like to use distilled or RO water instead of using peat moss or water
softeners that would change the color of my water. What is a good mix of
tap water to distilled/RO water? And which is better to use (is there
significant difference?) distilled or RO? Thanks a bunch.