What will kill the algae in my fountain?
There are many algae forming inhibitors that we recommend to use. A natural method is to add barley to the pool or bottom tier of your outdoor fountain. Wrap the barley straw in some netting place it all under the water in the deepest areas of the fountain. If the barley flows, weigh it down with a rock or brick. The barley will decompose which omits an enzyme prevents the formation of algae.