DIY hydor?

[kwirky]

ah. I didn't think they were mechanical inside.

I was thinking of doing something like a single output sprinkler head. A little tube that can spin, which is bent slightly propelling the spinning action. It would be driven by the sprinkler jet, rather than gearing.

I think it would have two benefits. the single spinning jet would cause a propeller like action, chopping up the water, while the jet output will spray water all over the place, randomizing movement.

I've been trying to figure out how I could build it. I'll whip up a 3d diagram of my idea and post it.

[Midknight]

Hi, just jumping on board as I am interested in trying to make something myself.

[kwirky]

i've thought of something along these lines (latest version of quicktime required to view)
http://www.esopenko.com/video/aquarium/sprinkler.mov

Just need to figure out how to attach the sprinkler portion to the piping, and allow movement. I think you can control the speed at which it's spinning through the friction/tightness it's attached.

I think these steps should work:

1. cutting a groove along the top of the "inner" pipe
2. the outer pipe is cut in half length wise, then a groove cut in each piece so it fits into the inner pipe
3. glue the split pipe back together over top of the inner pipe