Every day, in order to increase the flow of my low speed pump, I have to release the air from the filter. If I disconnect the KK, there is no or little air. Is it normal? or something is wrong with my KK. I tested and there is no leak from the hose. May be the KK restricts the suction enough and force the pump to suck air in from other places (pipe connections, etc...) where it shouldn't be a big deal otherwise.
Also, without the KK, I see zero bubbles from the return jet where I would normally see some with the KK.
This is the KK that is attached to the skimmer.
Thanks for your thought.