I have noticed that my pH has been raising ever so slightly as I go along in my cycle. I started with my water at a ph of 6.4 so I opted to use the crushed coral in a media bag to get the levels to a more desirable level for the bacteria. My test this evening showed that the pH has reached 8.0. From what I have read, I believe this is starting to go into an undesirable range for my purposes so I am looking for advice on getting it back down. I was thinking of possibly doing a partial water change like maybe 20% so that the pH would lower a bit. Would this be an acceptable method for lowering it? I would like to avoid using products to adjust it and would like to try and get it down naturally. My next question is... if doing a small water change is acceptable, how do I adjust the amount of Seachem Prime that I add? Would it just be 20% (or whatever the percent of water change may be) of whatever the original dosing was for my tank size?