Two days ago, I noticed that my skimmer was making a kind of gulping noise. I would take in water and then it would sort of swirl it all down an gulp it to the bottom and then flip up again and gulp it all down again. Meanwhile, the pump will not totally fill up with water (I can see it's struggling to get water in, but is near the top). Meanwhile, the pressure gauge on my cartridge filter is kind of fluctuating under 10. Not sure if any of this info is helpful, but this is what I'm seeing. Anyway. I decide to put a little more water in the pool thinking that maybe the water level had gotten a little low and that's why that was happening. And eventually, the problem stop. So either is was the water level or the pump finally caught on.
Today, I turned off the pump to clean everything out (skimmer basket, pump basket, cartridge) and when I restarted the same thing happened. Skimmer is making the same gulping noise. Could it really be the water level? Should I keep it higher. To be, it looks like about halfway up the skimmer (maybe about a 1/4" lower). Is it better to keep it higher to avoid this? Or am I doing something else wrong?