I'm waiting on my new Mr. Aqua 48g and am trying to decide where to go with my scape. I picked up some Seiryu stones, I'm guessing most likely they are Ryuoh though. Regardless I know they will raise ph and kh over time. Given that I do 50% WC's weekly this should reset itself to an extent I assume.
My question though is, after the stones are in for the week and I do a water change, will the ph swing from the tap water to whatever the stones make my water shock the fish each week?