AES sells a rotating arm assembly... I think around $15 if I remember correctly. I think some people are attempting to modify lawn sprinklers. I have 2 sets of the "wavemakers", that work OK from what I can tell, on a smaller scale trail. I personally think the design is easier with the drum rotating, probably less resistance spinning the drum than trying to spin the thicker arms. The rotating arm design would deal with varing water levels a little better.Originally Posted by luke-gr
These are in round 55gal drums with DIY cone bottoms (from DIY moving bed post). 4" gravity inlet from a "liner vortex", 2" rigid PVC to Sequence 3600, 2" ball valve drain.