Peroxygen will break down the cell wall of the alga after it has oxidized it is completely harmless. This is why Bill is stating to spray it directly onto the unwanted alga. It will try to break down the cells on your hand too so keep it off your cells too.

It is really amazing how well treating surface alga the days it blows to one end or the other. It works very well and after two or three gos there is not much to speak of for alga floating.

Cheers Don.

[Linked Image from corvettejunkie.com]
http://www.pondboss.com/subscribe.asp?c=4


7/8th of an acre, Perch only pond, Ontario, Canada.