I have researched my problem thoroughly on this site and have tried everything that everyone suggests and still have not been able to fix my problem. Everything was working normally until about a week ago. All I did last weekend was fill the chlorinator with tabs and vacuum the pool through the skimmer and I use a canister with a netting in it to catch debris while vacuuming. So I noticed the pump had a very slight whispy sound ( the sound you hear when there is air in the pump before it gets to full suction on startup). There appears to be BB sized bubbles flowing around in the pump basket and the same thing coming to the top of the water out of the jets. My PSI was always at 14-15 and now it is at 10-11. Nothing changes with the bubbles when I turn the valve from the skimmer to the floor drain. It acts exactly the same. I have lubed the o rings on the pump basket and the chlorinator, checked for debris where the top screws on to the basket. I also noticed some air in the glass top of my sand filter so I unscrewed that plug in the top while it was running to let the air out of that part. None of this has fixed my problem. The flow at the returns seems normal. I don’t really think that there is anything clogged on my impeller but can’t tell for sure because I can’t see it. It probably isn’t a big deal but it is bothering me because it was working fine last week. There is no leaks in my equipment in the pool house and all my drain plugs are tight. I’m figuring it’s probably something easy considering the way it just started but I’m out of ideas. Anyone have any new ideas for me? Thanks in advance.