This biological, up-flow filter was developed years ago using stratospheres of grated rounded stone and silica to create the best biological filter you can find for your pond. The ease of cleaning using a volume of air to forward-wash is superior to any backwash procedures we have ever come across, and this is the key to any successful filtration system. These filters have stood the test of time, first installed in the 1960s, some of which are still running and in service! They are a custom made system that does NOT EVER need to have the media changed or removed for service and maintenance!

Heres to you having a healthy, balanced, crystal clear pond with your Z-Bio-Filter!