We recently had to empty our pool to make some cosmetic repairs to the plaster. The pool has been filled up for about a month and a family member knowledgeable about pools pointed out that our pump has air in it. We also noticed our water feature on the sunshelf is shooting up much lower than it used to. These are all changes we noticed after we emptied the pool. I notified the pool co who built it and it’s still within the first year of its life. But in the meantime, are we missing something easy/obvious?