PH refuses to go up!!

[Hightower]

Well the rom that sits in is sealed well, but there is a single pane window not too far away. Ive opened that sometimes, and I have a air pump running from the window to the my sump.

8.1 is the most ive seen it. It always sits at 8.0

Frogspawn,hammerhead, trumpet, mushrooms all look pretty good. Just dont understand the torch and xenia just melting away.

I'll leave it at that. You would think that having your top off water as kalk witha ph of 12 should keep your ph in the tank up.