Simply Koi and More Koi

Hi all, As part of my pond design for next year I'm currently looking at the returns to the pond. I plan on using an airlift from the last filtration section into a small bay/sump from which there will then be 4 gravity return pipes into the pond itself. As I'd like to return these 4 pipes each to a...

[quote= However, I've found that larger Secohs (EL 60 & EL100) cannot cope with any depth beyond about 1.5m and simply blow the diaphragms. If you speak to Bibus they will tell you that Secohs are not rated beyond this depth. [/quote] Do many/most/all pumps specify their capable depth or must yo...

Hi Diego, Just to echo the last post by Okome, I'm building a (15,000l) pond next year and want to use an airlift return to the pond. I will probably use 4 110mm airlift pipes of about 1.3m length. The air entry will be near the bottom of each pipe using 15/16mm pipe and drilling many 1mm holes - ho...