Welcome!

So, while trying to figure out what to do about an algae problem we are
having I found your group.

Use barley straw for algae control.
There are tons of sites telling how barley straw works on algae, just
use a search engine to search for 'barley straw'

My lurker asks "How many tons???"

Actually just a few 50 pound bales, put in the water so that half is
submerged.
I don't recall what you said you had, but if you have running water,
put a bale in it too.

You have to watch him, he's a rabble rouser *grin*

Good, so am I :-)