Hey guys, i am currently cycling a 75g that i want to stock with mbuna. I am on a well with tap at about 6.6 and both GH and KH are at 3 (tested with tap water sitting for 24 hrs), at these number I have to buffer. As there are no fish, do I just add enough buffer to get acceptable numbers and it should stay consistent? My main question is for water changes. If i do a 50% water change, do I immediately add 1/2 the buffer i put in originally and will that be an instantaneous adjustment? My concern is if i have the tank buffered to say 7.8-8.0 then using my Python dump a bunch of 6.6 PH water on top will this be OK if i add the buffer when the python is filling the tank to keep from drastic PH swings?