What is a fairly new pump (< 1 year old) has out of the blue stopped circulating the water unless I turn on the blower for a second to "get it going". The pump is primed and full of water. There are no air bubbles in the pump basket. Here is what happens:
1. I turn the pump on, small bubbles come out 1 or 2 jets only.
2. The pump continues to run, still only small bubbles from 1 or 2 jets.
3. I turn the blower on for a half a second and then off.
4. Now the pump is working to it's full potential circulating the water from all the jets.
This is an inground spa. The PSI on my filter is right at where it has always been. I do not suspect an air leak from the filter or pump. What is causing this?