Thanks for the compliment on my efforts, I really enjoyed cobbling it together.
The PEX only extends into the pond and out of the 4" pvc far enough that I can loop it back to the shore and make the connections to the weighted hose that goes to the diffusers. So there is maybe 5 foot of PEX loose in the water. It does not sink especially with air in it so I had to place some rocks on it to keep it on the bottom - 18" deep. The only protection it has from the sun is my poor water clarity. I will place more rocks on it when it becomes visible again. I am in the middle of an algae bloom, heavy runoff from rains, and I really stirred it up last weekend installing the system.
The diffusers are Vertex that I purchased from Hoosier Pond Pros...
https://shop.hoosierpondpros.com/Vertex-9-Single-Air-Diffuser-VertexDiff9.htmAnd, I made my own bases out of sch 80 threaded PVC and 20-25 pounds of sackcrete, down and dirty...
I got the base idea from Highflyer here on the forums...
http://forums.pondboss.com/ubbthreads.ph...true#Post447893
