Natty Dread wrote:
I have a lion's head fountain on my patio with about a 12 gallon fill basin
on the bottom. The water flows out of the lion's mouth into an upper basin
with three outlets in which I stacked some river rocks to improve the
flows. There are no fish or plants. Algae has started to accumulate on the
rocks and in the bottom basin, and I'd like to put somethingin the water to
keep down the green. My dad suggested bleach, but birds use this fountain
as a bird bath and I don't want to do anything to hurt them. Any
suggestions? If bleach would work, how much should I put in, or in what
ratio of bleach to water? Thanks in advance for any info. If you need to
see the fountain to get an idea of the size, here's a link:

Try a small bale of barley straw in the fill basin. I use it to keep
algae down in my pond.

http://www.bestfish.com/barlybal.html