OK, so I am getting the hang of maintaining a pool (my second season). I am trying to figure out the source of an air bubbles in my return jets.
I usually have the pool set to 75% main drain suction, 25% skimmer suction. 75% pool return, 25% spa return. When it is set up like this, air bubbles are coming out of the return. I changed the suction to 100% main drain suction, and this fixed the problem, no air bubbles. So, i read that it may be the pool water level and the skimmer sucks air if it is too low. I checked that and the water was about 1/2 up the skimmer opening, so I added water until it was 3/4 up the skimmer opening. This did not fix the problem, there are still air bubbles, so I am wondering what the issue can be.
Any guidance is greatly appreciated.
Also, if anyone has any tips on where i can order Polaris 3900 sport replacement parts for good prices, that would be helpful too!