I'm working on a project that has a 1/2 acre pond with a 200 ft. shallow stream/pond section feeding into it via a waterfall. The stream is seasonally spring fed. In order to keep water flowing year round, a variable speed pump feeds approximately 5,000 to 10,000 GPH from the pond up to the top of the stream. The stream has four sections with wide spots that make up shallow pond areas. The stream depth is only 12" to 18" at is deepest. The plan is to have Koi and large pond whales (gold fish) in the stream sections. The 1/2 acre pond has LMB and CC. The thought for providing aeration for the stream section is to reduce FA and provide a better environment for the Koi and pond whales.

The existing aeration system is a Vertex 3/4 hp three (twin) air station system. The system was designed for four air stations, so there is reserve capacity. I was thinking that I might use bubble tubing for the stream sections. Does anyone know what length of bubble tubing is the equivalent to one Vertex disk? How long can bubble tubing be to equal a Vertex disk air station? What limitations on CFM must I keep in mind before overtaxing the compressor or system? I'm wondering how easy it will be to balance the system with the combination of vertex air stations with the bubble tubing.

On a different note, I need to find a source for Blue Gill for northern Nevada. Anyone know who is certified to bring BG into Nevada?

Thanks, Dennis