long story short - I was wondering if you guys could help. I have a new tank with fish they were doing fine I then test for ammonia yesterday. The ammonia was high, come to find out it was rocks that we separated and separately test and each had ammonia. I did a water change last night the ph now is 6.4ppm with ammonia 0.50ppm is it safe that I do a water change? I just don't want to cause ph shock . I was told to do a 25% water change but with the PH being so low I didn't know if I should do a water change.
thanks.
thanks.