[Sanke56]

Some have been writing about growing water hyacinth it would use up nutrients that the string algae needs plus they would also add some shade. They top growth would have stay in a roped off area so it didn't get sucked into the filter other water plants could also tie up nutreints and not be so problematic. Nitrates and phosphates contribute to growth as well. They say phosphate is the main limiting factor to plant growth in water bodies here and they are looking at ways to reduce flow in to watersheds. There is also the barley straw thing that ties up nutrients to decompose it.It takes a few month to get going but may be a biological option. I will send you a big round bale if you pay the freight. I get a some string algae but not as bad as you if you lived in this climate they string algae growth drops off at this time of year since we have a foot of snow at the moment.