I recently purchased a new house with an inground spa/pool. I just had the single speed pump replaced with a Jandy VS FloPro 2hp. We used the spa for the first time and the jets did not draw air/make bubbles. I drained the spa and pulled off the eyeballs and the jets worked (the pump is running at full speed). If I replace the eyeballs, the jets no longer make bubbles. I tried leaving the eyeballs out. This worked until the jets went below the waterline, at which time they stopped making bubbles (it worked after the first and second jet went under, but stopped after the third). I tried blowing out the jets with a shopvac, but this made no improvement. I do not know the size of the old pump (the label was ripped off), but judging from the physical size, it was probably 1.5-2 hp. The run for both the air intake and pump to spa is about 50' (2" line).
Any ideas on what could be wrong? Do I just need a stronger pump or is there something else i could try?