GreenClean containing "sodium carbonate Peroxhydrate".
"sodium carbonate peroxyhydrate can cause severe eye damage"
"slightly toxic to mammals"
"toxic to birds"
"Requires the use of chemical resistant gloves and foot wear, and coveralls over long-sleeved shirt and long pants"
"not effective on the macroalgaes, Chara or Nitella, or on any higher plants."
http://pmep.cce.cornell.edu/profiles/fung-nemat/febuconazole-sulfur/sodium-carb-perox/sod_peroxy_let_904.html
http://aquaplant.tamu.edu/database/algae/filamentous_algae_mgmt.htm

Cutrine & Cutrine Plus containing "copper".
"copper linked to Alzheimer's disease"
"buildup of copper leads to damage in the kidneys, brain, and eyes"
"causes irreversible eye damage and skin burns"
"may be toxic to trout and other species of fish"
"do not use in waters containing koi and hybrid goldfish."
http://www.newscientist.com/article/dn4045.html
http://www.appliedbiochemists.com/labels/CutrinePLUS.pdf

Hydrothol 191 containing "Endothall - Amine Salt".
"MAY BE FATAL IF ABSORBED THROUGH SKIN"
"MAY BE FATAL IF SWALLOWED"
"CAUSES SKIN BURNS"
"causes irreversible eye damage"
"Hydrothol 191 liquid + granular should not be used where fish are an important resource. Fish may be killed by dosages necessary to kill weeds. Skin contact may cause irritation. May be corrosive to application equipment"
http://www.upi-usa.com/files/Hydrothol%20191_MSDS.pdf
http://edis.ifas.ufl.edu/AA238