Pretty much overhauled an entire pool last year from pump, plumbing near the pump & filter, new filter internals, liner etc.
I noticed that my return jets like to blow a small portion of bubbles from them. I noticed this after replacing the plumbing around the pump + filter. I installed slip unions on all of the lines so maybe they’re coming from there? It didn’t happen before the new plumbing was installed. Not sure if it’s really much of an issue, I’ve left it be and the pool runs fine, I just don’t think it’s normal. Causes the pool walls to get a bunch of bubbles on them.
Also, I don’t know if it’s related but I recently noticed that when shutting the pump off, the main drain will spit out some bubbles from it right after the pool is turned off. It does it for a second or two then stops. Is this related? Also, is this normal?
I’m thinking maybe I should put lube on the slip union gaskets like I’ve done on the pump filter lid gasket. What do you think? Thanks in advance