I certainly think a good washing in warm/hot water and the skimmer will be fine, and as to it working in the tank, it should work just fine without PP being added. Have you used Chemi Pure or Puri Gen or even Activated Charcoal and even a water change?
What else is in that tank yu propose using PP in?Corals, Live rock, fish, are they capable of tolerating it? At what strength is it safe for what you have....all critters do not tolerate PP at the same rate. I use a lot of PP in my fresh water ponds, tanks etc as well as in my saltwater stuff. If used right its hard to beat and does a bang up job, but it can be lethal just as easy, and if there is a method of doing what needs to be done without PP yur better off with that method. Its super at oxidizing organics, knocking out bacterial infections, fungal problems, Ich, algae blooms and a host of other stuff. I use it for sanitzing plants and my nets etc so I do not cross contaminate any tanks, as well as medicinal and prophyalactic treatment of my outside ponds 2 times each year to oxidize organics and knock down any pathogens and parasites and algae.
