I need some advise.
I have a 30K pool with a spa attached. I closed the pool today and didn't see any bubbles coming from the spa drain. I have two drains in the spa, one is on the wall and one on the floor. The wall drain i got air bubbles but the floor no air bubbles.
The procedure I followed was air compressor in my pump drain.
Opened all my valves and put the main valve on recirculate.
Once i got air bubbles from returns and cleaner, I would plug and close the valve. Ran the blower for the spa before plugging them as well.
Once all the ports were plugged the pool main drain bubbled.
this is my 5th time closing the pool and i can't remember seeing this drain produce air bubbles.