http://petcitywa.com.au/2010/articles/how-to-articles/1671/how-to-remove-string-algae-without-chemicals http://www.youtube.com/v/faZZ5e_i2j0 http://i.ytimg.com/vi/faZZ5e_i2j0/2.jpg How to Remove String Algae Without Chemicals How to Remove String Algae Without Chemicals 173 2010-12-14T00:24:30+00:00 Algae barley Chemicals clear water control algae organic waste materials pond algae Remove String string algae water Without How To