We purchased the 14" Intex sand pump and Intex wall skimmer this year to go on our 22' round metal set Intex pool. We also have the Intex SWG that we have used for several years and love it! When we first set up the pump at the beginning of the year, it was pulling water through the skimmer great and the output was strong. It really kept our pool extremely clean (compared to the paper cartridges) and was hardly needing to vacuum at all. In recent weeks, (especially this weekend), we've noticed that the pull of the pump is extremely low as well as the output which of course causes the SWG to give the Low Flow warning and shut down. We have checked all the connections and hoses (which are all Intex hoses and brand new this year) and are not showing any air leaks. We've backwashed several times and rinsed as well. Not really sure what the problem is...any help would be appreciated.