I recently received this 46 gallon tank from a couple who was moving and it came with this old TRUVU HOB wet dry filter with a protein skimmer. They did not have the skimmer set up and have no idea how to use it. And it turns out that I don't either. I have never used or set up a protein skimmer before and I was hoping somebody could give me some advice on how to operate this thing. I know it involves hooking up an air pump somehow. I attached some pictures of the filter. Any help would be appreciated.