FA grows on the bottom of your pond and when it gets enough oxygen, it floats to the surface. I saw a video on this board that used a 10 foot 3/4 pvc on a cordless drill. I bought a steel nipple that I attached to the pvc. You walk the edge of your pond and stick the end of the pvc pipe into the floating algae. Then you fire up the cordless drill and the algae raps around the pipe. You can get quite a bit on the pipe. You drag it to shore and it slides off. It is in a nice long twisted pile that is easy to get rid of once it dries out. Excellent way to get rid of algae.