We have been posting about the two different types of filtration in our new Grow-out Greenhouse. Today’s post will explain our Polygeyser setup. For this particular filtration system, we bought an off the shelf filter with no pre-filtration. However, instead of using the suction pressure it is gravity fed. According to the manual, we can feed up to 10lbs of food per day per system. While this is a smaller footprint than the vortex system, the price tag is higher at about $3800. The big advantage to this system is that it automatically backwashes using a small amount of air. Both the vortex system and the Polygeyser are both air driven to dump dirt and water. They are both set to do this automatically six times a day. This is how we attempted to level the playing field between the two different systems.
