Koi Pond Pumps: External Or Submersible?

Choosing koi pond pumps may seem like an overwhelming task because of the many choices available. However, consider the two types of pumps below when selecting a pump as they are easy to maintain and can lower your overall costs in pond maintenance.

External Pumps for Larger Ponds

External pumps are essential if you have a pond that holds over 1000 gallons of water. Since the pump's main housing is located outside of the pond, there is little chance of electrocuting your koi or having fluid leak from the motor. These pumps are also very easy to clean, as the filter trap is accessible without having to physically go into your pond.   

While these pumps might be more expensive initially, they are able to move much more water with less energy and thereby save you money on electricity. If you have a large pond and are concerned about having an energy-friendly pond, an external pump is a perfect fit.

Submersible Pumps for the Smaller Ponds

These pumps are effective for small or medium ponds that hold less than 1000 gallons of water. They are very inexpensive and can be found in many sizes and shapes in home as well as garden stores. Submersible pumps are fairly easy to install and connect with submersible filtration systems. In addition, they are very energy-efficient and save you costs on your energy bill.

Although the pumps are inexpensive, the constant filtration means that they only last about a year before needing to be replaced. Because of their location, they are covered in a resin that prevents most electrical problems from affecting your fish. This waterproofing makes repair virtually impossible, however, and it becomes necessary to purchase a new filter.