I have a good clearing of bubbles in the pump strainer basket when my filter is clean (pressure is usually 18psi) - not 100% but it has always been about 98% bubble free. As the filter gets dirty, more air goes into the pump basket. When the psi reaches about 22psi then the basket is about 85% bubble free (so a lot of air). There are no leaks in the pump. The seal is new and lubed on the strainer basket. I have noticed tiny air bubbles flowing from the impeller but I'm not sure if that is normal. My signature should list all of my pool info. Thanks for any help.