Water Gardening: Biological Filter Media, 0 by Sheila_FW

Sheila_FW wrote:
Our bio-falls system that we purchased had a frame work that supported two layers of the course filter, then on top of that we had 30 lbs of lava rock.
Well we decided to set up another pond on a temporary basis and made one that worked very well. We took a rubbermaid type tub and fitted it with a bulkhead fitting and hose from the pump. Then built a pvc frame with legs and placed in the bottom. Then we added two layers of the course filter material and then lava rock to just below the top edge. We put the lid back on after cutting a flap along the long side for the waterfall. Cheap workable solution. The bulkhead fitting is the most expensive item.
We still opted for a small skimmer since it was under trees.
The picture was prior to the lava rock purchase.