Hello! First off let me start by saying my tap water is very hard as I have well water, but it goes through a water softener. My GH is pretty low but my KH is pretty high, and my ph is also very high. My fish all seem fine and happy and healthy. In fact I’ve had some fish in my tank for 2 years and they’re still alive and well. Today when I was shopping for more supplies, I noticed some seachem ph buffer, that buffers the ph to 7. I was thinking of buying this or even investing in an RO/DI unit to make water for my aquariums but Do not want to do this if my fish are fine. I’ve read that fish adapting to a ph is good and adjusting it after they’ve adjusted makes them even more stressed out. Does anyone have anything to weigh in here? I just want to make the best decision for my fish. Thank you all!