The easiest way for you to clear this size pond would be to use a 30-40 watt UV sterilizer. Most of your green looks to be free-floating algae. The Uv light would clear it in a big hurry with the proper water pump. I found a light that is cheaper to replace than to maintain. There are also many pond filters out there that will help to maintain water quality. Give me a PM if you would like more info on that.
The fertilizing looks to be from (rather heavy) overfeeding. Things can be done to clear the green, like aquashade reducing the feeding. That would destroy the base of the food chain in most ponds here, and why most people don't want it cleared. Since you feed, this is not a concern. It all comes down to your personal goals and how much time you are willing to spend on managing the pond.
