Hi again all,
Before the pool was opened this season, we had several major repairs done to our pool w/ attached spa. There used to be a vacuum breaker installed on both the pool drain and the spa drain. However, when they 'finished' the repairs they only re-installed the pool vacuum breakers and simply put a PVC cap on where the spa vacuum breaker was. It's kind of scary that I'm just now thinking of this, but would that be the reason the spa always looks half empty before the pump starts in the morning?
The attached picture is the style that both breakers are.
Thanks for any and all help,