Hi, I am new to the forum. I have a new problem with my pool system. I am getting some air bubbles in the pump this year, some of these are making through the filter and heater back to the pool jets. The air bubbles disappear when I turn on the pool vacuum. So if I leave the creepy crawley in the pol connected to the vacuum I have no air, but as soon as I turn the vacuum off, I start to see air bubbles in the pump. I was trying to figure out if this indicates a problem in the vacuum line or the main line. My thinking is that it must be a leak in the vacuum line between the vacuum shut off valve and the pump. Does that make sense to anyone else?