That seems really strange.
Try to get Carlos from coralvue tech support.hea been around forever at that place.
Aquatrance shows model 1000,1800,2000,3000
It does show the 150int uses a 2000.
But I've had a 2000 on an 8" body skimmer and it was a good match.
I currently have a 6" regal using a varios 2 and its incredible amount of air,perfect amount of water.
I believe it's the same skimmer you have just $260 different pump.
The varios is more flow as far as water and air.
So this doesn't seem to make sense
Can you post a picture of the needle wheel in your pump