After 12 hours of idle time, spa still has water in it.



Has not leaked with plugs removed.

Just a brief summary...after plaster I had both pool and spa losing water. Pool I found that the autofill line was broken under the concrete and the pool water was finding its way to that nice little pvc crack and back into the Earth. Plugged autofill, pool leak stopped.
Spa water level dropped to pool level fairly quickly.
Changed check valve, still drained.
Changed 3 way valves, still drained.
Plugged up all spa returns, still drained.
Plugged up spa drains, one for booster pump one for main. Yep guessed it, still drained.
Had a "pro" pool guy over and he was certain it was a leak in the main spa drain line.
(Mind you that during this trial and error, I needed to keep the spa filled for the plaster.)
Coincidently, the pool water level and the spa light niche are aligned perfectly.
Plugged spa light conduit with silicone, and walla, no drain.

Only a temporary fix, i know but it'll work for now.
Still much to do, but at least I didn't need to bust out heavy machinery...