Hello AngelKay...
Haven't had a lot of time recently to log on, but have just caught myself up on the thread. I hope you get your microscope soon.
I was thinking the same thing as Alien Anna that it could possibly be copepods. These are small aquatic crustaceans and can be super tiny, barely visible to the naked eye or can be up to 2cm (although there are a few species that can reach over 30cm). Most of the freshwater copepods are non parasitic but there is a few species that are parasitic to fish. However, if your tank is carrying a large burden of these little buggers, it's not surprising that your fish are irritated. It's kind of like after having your hair cut, the little hair snippets are not attacking you, but the mere presence of enough of them on your skin is enough to annoy and drive you crazy.
Once you get your microscope, sorting out what you have shouldn't be a problem. Getting a good picture takes a bit of practice, as you'll have to play around with the angle you hold the camera on the optical lens until you get it right. A little while back I did some microscopy pages for Feline, and have put up some slide photos of some common microrganisms you can find in your aquarium. You might find it useful right now, as you may have one of the ones I've already covered. More will be coming, I've just been really busy. If you don't find it there, post a pic and I'll let you know what you have. I'll put the link at the bottom of the page, I have a few pics of a harpacticoid copepod on page six.
As for using the copper, I would hold back for now, as copper can be stressful to fish, especially if your dosage is off. As a result of our massive power outage here, tank temps went up with no AC and and I now have quite a nice population of copepods, they like the warmer temps. I have been working on some experiments to figure out what is the lowest salt solution that will whipe them out. It's a time consuming process, and am hoping to have the results by mid next week. Finding the lowest salt solution would be ideal to use on fish who are less tolerant to salt, however scaleless fish and others who do not tolerate salt would have to be removed during treatment.
Please keep us posted...Heres the link
Microrganisms