just another update.. all test readings (nitrate, nitrite, ammonia) are zero and pH is 8.2-8.4.
Berghia have "disappeared" and have not noticed any reduction in aiptasia.. actually noticing more babies starting. I may get a peppermint shrimp and I am definately getting aiptasia x to take care of most of the big ones.
I am also looking at a DIY kalk doser. Perhaps a jug set up with kalk to drip into the sump.. still doing research on it..