Jun 15, 2020 Insert bookmark #13 @RIPoolguy19 @Lucky13F Have you the two removed the skimmer lid (with pump off) and lubed the o-ring under the lid, it will not just take a large gap for your powerful pump to suck air in from a inadequately sealed lid. Anyhoo, I are https://pool.net/gartenpool-300-x-125-cm-komplettset.html