I discovered through prolonged experimentation and many protypes that you cannot drive a fly sparge arm using the pressure of the sparge water. No matter how light the equipment the flow required is too great and sparging time subsequently shortened too much. here is my solution...
https://www.youtube.com/watch?v=eSb9WjPfSY4&feature=youtu.be
If you can improve on it for ?30 or less please post so i can build one.
https://www.youtube.com/watch?v=eSb9WjPfSY4&feature=youtu.be
If you can improve on it for ?30 or less please post so i can build one.