Is your question is that too high? It is at the high end of acceptable. If that is the peak at the end of the day you are probably fine. My HP ranges from 8.0 in the mid morning to about 8.35 at lights out around 10PM. I ma dosing with kalk also in my reef. My FOLR tank runs around 8.05 to 8.15 and I am not trying to raise it, just keep at a minumum of the 8.05.
