Hi Carlos,
Well, I decided to go to work late; I didn't want to risk damaging the pump if something was in there. I took the skimmer out of the sump and disassembled the pump. I did not see anything in the impeller assembly, but rinsed everything out again just to be sure. Reassembled and returned to sump.
Still very little water output, dead silent, and no foam head after about an hour. I took a video with my phone, but honestly, I've never transferred video to email. I ran out of time and am at work now. I will work on getting video into my computer this evening. Of course, when I cover both air inlets in the silencer, the water rises up in the neck of the skimmer.
I'm frustrated. If you recall, I originally had the 202S which is a goliath and was much too large for my 75 gallon system; now a month has gone by and finally the right skimmer size, but no foam.