I was considering making my next one of plastic media packed into a plastic cage mesh cylinder, as i have lots of extra plastic media I used in a packed column, but VanGorder warned me not to. He said it's been done and eventually the drag gets to much and things fall apart including a motor burn out if you use a motor.
I was going to try that one except with plastic beads, then I thought bio-balls. I could not convince myself it would work. Now I have a bunch of plastic beads and bio-balls that I have been sitting on for the past 10 years
There is a surplus place near the Indiana/Michigan border. We went there a couple weeks ago to get some steel tube for a project. Prices were reasonable, but they did not have the lengths we needed. They have all kinds of stuff there. I saw a bunch of fiberglass in one of the buildings.
