Mark,

I can empathise with you regarding the overfilling from the rain. We are having steady afternoon thunderstorms and have to decide whether to drain down and lose salt, or let it overflow.

Draining unfortunately has to be the first option, as the other half would take a VERY dim view of salty water into the garden.

With the large pool that you have changes in salt concentration that will be slow to occur, so I suspect you are in a catch 22 situation.

FWIW I just make sure I have at least 3000 ppm salt, regardless of rain, and having to discharge and so forth. With the Aqualogic if you can set the high salt alarm higher, this might be a way around the problem. If not you may have to talk to Aqualogic and see what they suggest.

Hope this helps.

Pat