Possible Leak??

[MarkHoop]

Opened the pool today from its winter nap and got everything up and running. I did notice that the returns in the stairs were not blowing any air in the flow stream but other than that no issues. The plumbing in the cabana is showing no drips so thought all was good. After a few hours of circulation the pool level has dropped by an inch or so and has me wondering if the water is blowing out the airlines attached to the stair jets which by venturi are supposed to add air to the return jet stream. I have closed of the valve that directs water to these jets and so far no further level drop. Any troubleshooters out there wanna take a shot at this one?

 

[aquafed]

I think I know the set up you’re referring to. I would unscrew the air adjustments out and inspect your Venturi lines running down. Make sure they are not busted. If they are broke below water level they will push water out instead of draw air down. Also check for debris on the nozzles them selves as sometimes a blockage can redirect water up air supply.