Curious about what ways I can effectively and safely lower my pH. My tap water is around 7.4, trying to get my tank to anywhere under 7. I heard aging tap water is a good way to lower its pH, but after its in the tank and cycles for a bit with my aeration, wouldn't the PH just go back up anyways? The whole ' More o2 and less Co2' thing? Just curious if there are other methods than picking up distilled water for water changes? Thanks in advance for any advice.