Posted: Tue Aug 18, 2009 12:32 pm
There's a nitrogen cycle, but I've never heard of an algae cycle---once it starts to grow, it continues until it's eradicated. You can take steps to minimize it. With a pond that's constantly in the sun, though, it will be difficult to do so.
You could get some aquatic plants that cover the surface (duckweed, water hyacinth, for example, to limit the light the water gets. A filter with a UV sterilizer would help, if you want to spend the money.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-