Copper sulfate at close to 1 part per million will kill grass carp and trout.
Easily over 100,000 species of algae. Some are susceptible to effects of barley straw and some are not. Proceed at your own risk.
https://www.btny.purdue.edu/Pubs/APM/APM-1-W.pdf#search='barley%20straw'
Last edited by Bill Cody; 04/28/17 01:33 PM.
