10-24-2006, 05:51 PM
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Lowering pH seems to me like a chemistry project. I believe you also need to work with kH and gH, but I've always been confused about it. Ever since our water supply company changed to Lake Michigan water, our pH is a nice 7.4, so I never really had to mess with it.
Succesful methods of lowering pH...
1. Pre-mix RO and tap water before pouring into the tank to gradually lower pH.
2. Pre-mix acids, such as Muriatic acid and your tap water. Muriatic acid is cheap, but a dangerous chemical to work with since it is a weakened state of Hydrocholoric acid contained in water.
3. Use woods that release tannins. Tannins will usually turn your water brown in color, like the color of tea.
4. Using presurized CO2.