Man...I cannot find the post. I am horrible at searching the archives. I even went through my old posts back to 2006 and I cannot find it. Basically you need a pvc pipe. You need to be able to attach the pipe to your drill. I glued a threaded pvc piece onto the pipe. I then got a metal threaded nipple to screw into the threaded pvc piece. The nipple needs to be able to fit into your drill chuck. That is all there is to it. Cheap way to remove the algae. You can take out pretty good chunks at a time. Any fish or tadpole that is underneath the FA will more than likely get sucked up. Good luck !!!