hi, my 10 gal tank has just finished cycling and I need to add some water, its getting low. when I first filled the tank I used bottled water with a
pH of 6.2. I have bought more water from a different store and it has a ph of about 8.7. They are both very soft, If I put the new water in will it raise the ph of the whole tank? Could I put ph down in the water before adding it? I would like to keep the ph where it is ,so if I ever have an
ammonia problem it will be ammonium and won't harm the fish.
Thanks,
Travis