I have a bestway 18 foot pool. My pump recently died so i got a deal on a 1.5 HP pump. I adapted everything and it seemed to run just fine. Now for some reason im constantly having to go out and shut it down a few times a day to purge air from the system. I checked everything and have no leaks. There is plenty of water in the skimmer and its not pulling any air into the line. The bad part is the skimmer does not have any threaded connection. I have a vinyl tube clamped to the outlet and the input of the pump. I never had these issues before. Maybe i need a new skimmer with a threaded port, but the skimmer is round where it goes thru the liner. Any insight is appreciated. Thanks