I had a Whisperflo 1.5 Uprated 2 speed pump installed recently to replace an older Max-e-glas 2 HP full rated.
The new pump clearly moves more water despite same total HP. What is strange is that "sometime" when it starts on high speed it will pull air from the little tube by the elevated spa (assume this is where the spa bubbles come from). This is despite the pool being in "pool mode", not "spa mode". IE the intake is coming from the pool and the returns are split between the pool and the spa.
Do I have a problem? Is the pump "too strong" for my plumbing?