Join Date: Nov 2012
Location: somewhere in a swamp
I would doubt it has any impact when used as directed on moss.
It did not kill Cladaphora IME, test.
Gettign those last bits of hair algae is tough,m so this product actually works well and takes care of the remainder's that can hang o for about 1-2 months, even if you are very aggressive. So it can be cured with chemicals, but.........it is extremely hard to do labor wise and even worse with moss.