I have a 33,000 Gal in-ground gunnite pool, a Triton II sand filter, Sta-Rite Dyna-Glas 1 1/2 HP pump. When operating the pump with both the skimmers and main drain open, there are air bubbles in the pump basket and I lose prime when I shut the pump off. I noticed yesterday that if I close the skimmer line, the pump basket has no bubbles, and I am able to start the pump without the need to prime.
In reviewing other posts and comments, I understand that air is getting in the line. There are a couple of points where water drips from the plumbing and pump basket. Would these be the source of the air leaks? If so, I don't understand why I don't have the loss of prime issue when only the main line is open.
Any thoughts and advice will be appreciated. Thanks.