My 2cents on the wet or dry Skimming
Depends on the load of your tank and the skimmer you have. If you have a 200 gallon system and you skimmer is rated for 300, skimm dry. If you are pushing it like getting a skimmer rated for the 200, skimm wet.
I Have a RC500 rated for 500 gallons and my system is only 400 so I skimm a little dry. I dont want to pull everything out of the water, some fish and corals need food that is in the water.