I have worked for over two years at putting together a line of air-lift components that would simplify the use. When I first started my quest to use air-lifts I could only find one airlift available and it wasn't very useful when it arrived. What I wanted was a system of components that could be placed down the center of a bio-filter for easy access and maintenance over time. In the last 2/1/2 years I have developed several components and built ponds and quarantine tanks testing as I went. I wanted a group of components that anyone could use easily in any manner they wished.
Since I couldn't get any useful info for what I wanted to create I built my own air-lift test area and spent a lot of time and money trying to figure it all out. My first Q-tank was 2 1/2 years ago and my first 10,000 gal 1/2 air-lift, 1/2 standard pond pump pond was right after that. I'll post my Air-lift projects ahortly.
Here are some shots of my early tests and my air-lift test area. I built several air delivery devices with mixed results and tried several depths before I realized I needed more depth than the tank I was using had.