Morning, I am getting air in my pump filter basket, not a lot, but enough that it is noticeable. I have two lines, one from Main drain and the other from the skimmer, coming from the pool that meet at a valve housing so I can draw water from either or both at any given time. I only get air in the pump basket when I have the valve set to either skimmer only or main only, and no air at all when it is set to both. Obviously both is the best position to leave it in, but why would this happen? Any ideas?
Also what is the best way to seal the joints on the plumbing lines, the pool is 15 years old now, and some of the joints may be weakening, can I just go around and seal them with silicone caulk?
PS I love this site, its helped me solve may pool chemistry issues and saved me money on it as well!