I also have used it, Good product, but I switched to AquaC Complete and like it better. Seems to be more stable and also has magnesium...
Everybody has thier own opinion and its best to use what works for you..
Iused to have a Prizm and it took about a week before it would produce any foam. The hose should be connected to the chamber port. The dead end port is for primming.
I don't have a Corallife skimmer, but I installed my Remora it took about 4 days to produce anything. If you don't have a good surface skimmer the film is hard to get off. I still have surface film on my water...