What is the Difference Between Submersible and External Pond Filters

When you're setting up your pond, one of thepond filters is that they are difficult to reach for
most important pieces of equipment you'll buy iscleaning and maintenance. To clean the filter pads
your pond filter. Your pond filter is the next best(recommended once a month or more) you will
thing to Mother Nature when it comes to keepingneed to physically enter your pond to reach your
your fish happy and healthy. In fact, the morefilter.
money you invest in a well-designed large pondA standalone submersible pond filter (no attached
filter, the easier your pond maintenance over thewater pump) can run as low as $40, but you will
years.have to buy a water pump. An all-in-one
For effective pond filtration, you need threesubmersible system (pump included) starts around
types of water care: biological, mechanical and$180. The best part about a submersible filter is
chemical. The biological portion of your filter is fineno external plumbing, so installation is a snap.
filter floss or bio-balls that house beneficialExternal pond filters are housed above ground
nitrifying bacteria. The mechanical portion is coarsenear the pond, receiving water from a pump
filter floss that separates waste debris from theinside the pond. External pond filters offer very
pond water. Finally, the chemical portion of youreasy maintenance and cleaning routines. There's
pond filtration is entirely up to you! You can addno need to get wet when you're cleaning an
ammonia chips, carbon or any sort of chemicallyexternal pond filter, since everything is above
treated filter pad to improve your water quality.ground. They are excellent for ponds over 2000
A pond filter can house all three of thesegallons. A common drawback to most external
components at once for easy maintenance andfilters is that they are hard to hide. Some pond
cleaning.owners overcome this by building attractive
When looking at filters, you'll find that there arehousing for the filter or by burying the bottom
two basic types: submersible and external.half of the filter in the ground. External pond filters
Submersible pond filters are placed directly in thealso need to be properly plumbed to the water
water, while external filters are placed outside ofpump inside the pond. This can be intimidating for
the pond. Both have a water pump that must benew pond owners.
placed under the water in the pond. SubmersibleAn external pond filter can start as low as $80.
and external filters offer unique features andLarger ones with built in UV can run much higher-
advantages that you'll have to consider whenover $250. All external filters need to be plumbed
deciding which one you want to purchase.to the water pump inside the pond and the
Submersible filters run entirely under water andreturn, so you have to factor in plumbing costs
sometimes come with a water pump connectedtoo. Plumbing includes the cost of clear tubing,
to the housing unit for easy installation. Most ofPVC and metal bracers. Generally it costs $50 -
them have attractive fountainheads that help$80 to plumb an external pond filter.
aerate the water, and some high end modelsNo matter which filter design you decide on
even come with built-in UV sterilization. A bigbuying, remember to carefully match your filter
advantage of a submersible pond filter is the factwith your pond size. You never want to "skimp"
that it's hidden under the water. Generally,on buying your pond filter. We recommend buying
submersible pond filters are ideal for smaller pondsthe largest pond filter you can afford!
under 2,000 gallons. A drawback to submersible