Pond Boss Forums AERATION Systems questions Please help me upgrade my system

Well, the first thing I think you will need to do is upgrade the 450' of tubing to something with a larger inside diameter.

Given the size and depth of your pond, you have to have a diffuser or diffusers that will move 571,000 gallons of water to the surface once in a 24 hr. period or as long as you want to run your compressor. i.e. if you want to run your compressor 8 hrs. at night, you will have to have enough air volume and diffusers to move 71,375 gallons of water per hour at a bare minimum.

A Vertex diffuser needs 0.5 cfm minimum to open and get the bubbles going. It's operation range is from 0.5 to 1.5 cfm.

I would pull the diffuser off of your airline, and sink it down to the bottom of the pond, and then check the amount of pressure in the line. You should not see more than 0.5 psi for every foot of water that is over the airline at it's outlet. If you see more than that, there is too much resistance to flow in the airline, i.e. it is too small of a diameter.

At 2 cfm (1 cfm per disc), at 5' deep, a dual disc Vertex XL2S airstation will move 1,850 gpm.

I would consider moving that 571,000 gallons once per day to be a minimum, and would rather see you move it 2x per day due to the fish load. I would rather see you run the aeration system 24/7, but if you don't want to do that, run it from sundown to an hour after sunrise, and all day if there is heavy cloud cover.

You should have enough numbers in the above information so that you can figure out the rest of the system by getting in touch with the people who you will be buying the components from. If they cannot furnish you with CFM ratings at 3 psi backpressure, find someone else to purchase from.