mncdg
01-13-2003, 08:33 PM
I am in process of setting up a 29g tank, and tested my tap water today. Out of the tap it has a PH of 7.3, and a hardness of <15ppm, which I know are both low. I also tested the water in my tank which has been sitting with substrate (regular pea gravel found and most hardware stores), and the heater and filter running for a few weeks. The water in the tank tested at a PH of 8.4 but the hardness still <15ppm. This leads me to think that the gravel is raising the PH, though I'm not certain at this point, (any opinions would be appreciated :D ), also what would you suggest to raise the hardness? Thanks!