Female Angel and parasites

Good afternoon all -

I have a pair of angels, the female, poor thing - when I got home the
day before yesterday, she had no right fin, and the other was also
bitten down far. The male was being aggressive AS I watched.

I'm having a few problems, hopefully you all can help me.

1: I moved the male angel out to a larger tank with a couple of silver
dollars (comparable size, so they won't get picked on too much) and
some other peaceful fish. What can I do to help the female angel heal
and regrow her fins?

2: I have a HORRIBLE problem with algae in the tank. I scrape and
clean at LEAST every 10 days. I change water. I used the water
conditioner. When I moved the male, I looked very closely at the
algae and AHHHHHHHHHHHHHHHHHHH...some kind of parasite was on the
glass. A minute, slim, somewhat long thing. WHen I say long, I mean
in terms of its width. It looked and moved like (for a visual
reference) brine shrimp hatchlings. Except I only saw them on the
glass. I didn't see any on the fish, but she's silver and black and
the male is blush. They were everywhere. I used something in her
tank, but I have a problem now - I may have infected my main tank and
I have loaches in there.

Any ideas as to what the parasite is? I used a medicine for fish lice
and some other parasites, and that knocked them down a peg. I still
saw some this morning though

ANy help is appreciated,

Trai