How to Install a Bio Filter for Your Pond

A concentration of microorganisms, as well as ammonia and nitrates, can destroy fish if a bio filter is not included in your pond’s installation. Installing a biological filter is relatively simple. By following the directions below, you will have healthy fish and a glistening pond that is free from the contaminants that can harm them. 

Materials Needed: 

  • Submersible filter
  • Ground fault circuit interrupter (GFCI)
  • Pump
  • Exhaust hose
  • Pipe wrench
  • Hose clamp
  • Plastic tubing
  • Screwdriver
  • Hacksaw
  • Cinder blocks 

Step 1 – Find a Location for your Bio Filter

Find a good location in the pond to set the filter. Try to find a clear area that is unobstructed by mud, algae or other barricades. 

Step 2 – Determine the Size of the Filtration System You’ll Need 

Determine the size of your pond and install a bio filtration system that will be compatible to its overall area. Whichever system is required, it should be adequate enough to filter half the water in your pond. 

A submersible filter should be used if the pond is small in size. Alternatively, an external pump and filter should be used if the pond is of the larger variety.

 Step 3 – Disconnect the Main Power Source 

Before carrying out any work, make sure the electricity is shut off. Do not handle the pump with wet hands. Make sure all power precautions are taken before commencing work. 

Step 4 – Place Cinder Blocks in Chosen Location 

Never allow the pump to be set on the bottom of the pond. Set cinder blocks on the pond floor to support the pump prior to installation. 

Step 5 – Set the Submersible Filter 

As previously mentioned, find a location free of mud and plants. Follow the manufacturer’s guidelines with regards to the bio filter chosen and set the filter on the cinder blocks. 

Step 6 – Locate and Set the Above-Ground Filter 

If it has been determined that the pond is too large for a submersible filter, it must decided where to set your filter above ground, as this is a preferred pump for a larger area of water. Make sure the area that the filter is placed in is planed, flat and easily accessible. 

Step 7 - Attach Plastic Tubing to the Pump’s Outflow 

Consult the manufacturer’s guidelines and affix plastic tubing to the pump outflow. 

Step 8 – Secure the Exhaust Hose 

Using a hose clamp, secure the exhaust hose tightly. 

Step 9 – Submerge Hose 

Hook up the exhaust hose so it remains submerged at the bottom of the pond. 

Step 10 – Make Sure You Have the Proper Connection 

Make sure the outlet you use is a GFCI, or ground fault circuit interrupter. This kind of outlet acts as a safety valve as it has a circuit breaker that will trip if any kind of leak is uncovered. 

Step 11 – Turn on the Power 

Turn on the electricity. 

Step 12 – Switch on the Pump 

Switch on the pump’s power supply. 

There’s a host of bio filters to choose from. Once you have made your selection, installation takes little effort and maintenance of your pond will also be easier!