ITGuy wrote:
Well here is what is happening. The videos I see of skimmers show a frothy
foam boiling over into the collection cup.

If the water is filthy and the skimmer is one of the high-efficiency models,
you'll see this sort of thing. That's not normal.

Right now all I have is bubbly water, no foam or froth. When I adjust the
air inlet valve, where should the top of the bubbling water be? down in the
tube, or up top about ready to boil over?

Bubbly water is normal for a clean tank. The level of the water should be at
least 1/4" and no more than 1" below the bottom of the uprise tube into the
collection cup. If the water is into the tube, you have a problem. The fix
depends on the type of skimmer. With mine, the problem could be either too much
water flow or too much air flow. With a venturi skimmer, water flow is the only
parameter.

George Patterson
If you torture the data long enough, eventually it will confess
to anything.