How can I stop algae from growing in my pond?
You are so right about the amount of maintenance that is required. There are several options that I can suggest, and I hope at least one works out for you. The use of barley straw in your pond should inhibit algae growth. Make sure you don’t overstock your pond with fish. Decomposing organic waste from fish provides a continuous supply of nutrients allowing to algae keep growing. You might want try to find some “water shade” tablets. They turn the water a dark blue which helps keep the sunlight out so the algae won’t grow as much as it normally does. Good luck.