Keith, Love your posts and your paint job on the shed! Looks great. Too bad you can't take that shed with you!

What size weighted tubing was that did you say? It looks heavy!

I see one of your diffusers has the 2 disks right on top of each other. That must be for a shallow water application? My diffuser is posted in a picture a few up from yours in this post. Mine had quite a thick layer of almost cemented grime on it, but it also endured some soil floc sealant. Yours cleaned up very nicely.

Your pond is beauteous, you will certainly have a hard time finding another place to live that is like this one!