BACKWASH AN ULTIMA II FILTER

Backwash and Ultima Filter Services

Some advanced ponds may be equipped with an external filter such as an Ultima II. Ultima II filters combine both biological and mechanical filtration in a compact and easy to clean body. By simply rotating the valve you can easily backwash an Ultima II filter from fish waste and sludge. We suggest this is done at least once every week. On some ponds, every other week is acceptable.

When backwashing the filter the water flow inside the filter is reversed. Reversing the flow forces water out of the internal plumbing of the filter causing the media to spin and “swoosh” around allowing the debris to be knocked loose and flush out.

The most important thing to remember when backwashing the filter is to turn off the pump each time you change the valve’s position. I will now walk you through the steps of backwashing your Ultima II filter:

  • Turn off or unplug the pump.
  • Move filter valve handle to the “BACKWASH” position (6 O’clock).
  • Turn on or plug in the pump.
  • Let pump run for 30+ seconds. Usually a bit longer depending on fish load and the last time the filter was cleaned. At this time you should be able to hear the media inside the filter knocking around.
  • Inspect sight glass or drain line. Check to see if water is dirty or clear. If the water is still dirty let the pump run a bit longer.
  • Once the water starts to run clear shut off or unplug the pump.
  • Move the valve handle to the “RINSE” (10 o’clock).
  • Turn on or plug in pump.
  • Let the pump run for 30+ seconds.
  • Once the water is as clear as the pond water shut off the pump.
  • We like to repeat this process at least a second time. When repeating this process we find much more waste is removed than if the process were on performed once.
  • So picking up where we left off from above
    Move filter valve handle to the “BACKWASH” position (6 O’clock)
  • Turn on or plug in the pump.
  • Let pump run for 30+ seconds. Usually a bit longer depending on fish load and the last time the filter was cleaned. At this time you should be able to hear the media inside the filter knocking around.
  • Inspect sight glass or drain line. Check to see if water is dirty or clear. If the water is still dirty let the pump run a bit longer.
  • Once the water starts to run clear shut off or unplug the pump.
  • Move the valve handle to the “RINSE” (10 o’clock).
  • Turn on or plug in pump.
  • Let the pump run for 30+ seconds.
  • Once the water is as clear as the pond water shut off the pump.
  • Move the valve to the “FILTER” position.
  • Turn on or plug in the pump.

It is always a good idea to check for leaks and inspect the system after performing any tasks.

Below, you will find a short video (labeled “How To Backwash an Ultima II Filter”) where I demonstrate the process described above.