Originally Posted By: FairviewFarmer
...
....
I am looking at an airmax PS20 also, that is one of the brands I have received quotes on, all though I think the sales lady I am dealing with is pulling my leg, or trying to make a little extra on me. She is claiming I need to run two direct burial air lines from my pump to my pond... No one else has ever told me that, At 500' that is driving my price up, I just left her talk and when I got the quote deleted the extra line....


I suspect she is telling you that because the PS20 has the manifold right at the pump. It consists of two valves. One line to each of the two diffusers. I see no reason why you couldn't use a Y and bring the two flows together for the 500 foot run and then split them again using another manifold at the pond edge.

[Linked Image]
Be Brave Enough to Suck at Something New!