Hi Indiana Pond, and welcome!
I suggest you start a new thread about the algae, with the words "Algae Problem" in the title, so people will see it and respond to help you. Also, we have discussed this many times before, so you could do a search and see if you come up with some answers.
Algae doesn't hurt your fish, but it is unattractive. I got rid of mine by adding a filter, shade, and plants. Algae comes from an imbalance of too much food (amonia and nitrogen, from fish waste) plus sunlight. So, shading the pond a bit cuts down on sun, and a filter removes some of the toxins and so do underwater plants (anachras, hornwort, etc.) If you pond is large, you're going to have a tough time.