DIY Rotating Return Thingy

[ReefVan]

I see that you guys (and gals) are gonna make me work to get this thing going.

First, the inner pipe rotates, it's not fixed. The outer pipe does not exist.

Second, the water enters thru a tee ftg and enters sequentially exposed inlet ports on the inner pipe. (This one's for the patent lawyers) It does not enter thru a ftg at the top of the pipe.

Third this inner rotating pipe has 4 o-rings, not 3.

Fourth, the 90 degree outlet elbow is attached to a moving inner pipe, not the outer pipe.

So far, so good, that'll keep the Sea-Swirl police at bay for now... :P