LOL! Yeah, 61° water isn't going to use much chlorine.
It is common to get some air build up when running variable speed pumps at low RPM. I get some air in the pump basket when running my pump at 1100 rpm and I can bleed some off from the filter. It shouldn't be much though. When I restart my pump after cleaning the basket I run it at 2000 or 2500 rpm to push (pull?) all the air out of the basket and bleed the filter. Then I usually don't get too much air build up.
It is common to get some air build up when running variable speed pumps at low RPM. I get some air in the pump basket when running my pump at 1100 rpm and I can bleed some off from the filter. It shouldn't be much though. When I restart my pump after cleaning the basket I run it at 2000 or 2500 rpm to push (pull?) all the air out of the basket and bleed the filter. Then I usually don't get too much air build up.