Hey there, Camden here.
I own and operate a swimming pool service company. I'm here to see if I can lend some advice to homeowners!
(Deleted link, Jim R.)
Thanks and look forward to supporting fellow pool people!
When variable speed pumps run at lower speeds theres almost always an air bubble in the basket, so that could be very normal. Check your orings (including those on the pump drain plugs). You can also try slowly pouring a bucket of water over the connection where the pump meets the plumbing. Not...