found my skimmer wasn’t producing bubbles, took it apart, soaked it in vinegar and gave it a good scrub, and just before putting it back together checked out where the air tube inserted (is this the venturi?) It was clogged solid with salt. Cleaned that out and all better. Less than two weeks later saw the bubble production go down again, poked theough the air intake again (caked solid again) and problem solved. Reading other forums I see this isn’t uncommon, so I guess it’s another step to add to my maintenance routine. Anyone have any tricks to prevent (or decrease) this?