I'm getting air in my water feature setup and trying to rule out cavitation, as I'm not sure I do not have the best pump for this setup. I can create obvious cavitation by adjusting valves and getting the marble sound through the valve. Currently, I'm just seeing air in the basket and through the bypass return (a lot of air). No obvious leak from the pump basket lid.
Setup:
Pentair SuperFlo 1HP
Suction side
2" intake from pool direct to pump. No filter, etc. in this path. Short run < 25'
Return path
There are valves on all 3 returns that I can adjust
2" bypass back to pool. Terminated to a 1" return Short run < 25'
1.5" necking down to 1" feeding two water bowls. Length ~ 65'
1.5" feeding two bubblers. Length ~ 50'