Although a natural pond does not require the use of a pond filter a man made pond can only benefit from its use. Pond filters are designed to break down toxins within the water usually caused by decaying organic particles, if a pond filter is not used to remove this physical dirt your pond could be at risk of having poor pond water which could result in health problems for any fish living within the pond.
What are the Best Pond Filters?
Depending on the size of your pond and how many fish you have, will determine the type and size of the pond filter you need. Basically, there are two types of filters: external pond filters (when the filter operates from outside the pond) and submersible pond filters (when the pond filter is immersed in water).
Once installed the pond filter will keep both the water free from particles that can cause the water to be murky, smelly and even toxic, your fish and pond plants will also benefit from the pond filter as they will be healthier.
Pond filters not only optimise the viewing of your pond by cleaning the water for enhanced viewing of the fish, plants and inhabitants pond filters also conserve water by cleaning and recycling the ponds original water, When the water is pumped back into your pond it keeps the pond water which also helps to reduce the risk of the pond becoming stagnant.
There are several different types of pond filters to choose from all of which will produce a noticeable difference to any garden pond.
External pond filters are usually the largest type of pond filter available. They are situated outside of the pond but close to it. They are usually filled with large sheets of foam with porous or plastic stone biological media underneath.
The biggest advantage of external pond filters is the improvement of the water quality it is also possible to add different filer media to serve other purposes should you have a specific problem with your pond. Having the pond filter outside of the pond makes the unit a lot easier to clean also the external pond filter supports the largest fish load.
The only disadvantage is the size and visibility however it is quite easy to disguise the pond filter behind pond plants making it less visible.
Submersed Pond Filters
These pond filters are extremely versatile and are filled with a mixture of filter media for different types of filtration including chemical, mechanical and biological filtration. The advantages of this type of pond filter is not only the cleanliness of the water but the pond filter can also be used for other purposes such as water fountains, pond spitters and many other water based pond feature.
The only disadvantage is this type of pond filter is submersed in the water which may mean that you will need to stand in the pond to retrieve it depending on where it is situated when you decide to clean it.
When purchasing pond filters you will find that pet shops are always happy to help you chooses the right filter to suit your pond, take the time to ask someone in the shop and explain what sort of pond you have it is also wise to have a rough idea of the size and how many fish reside with it to make sure the best pond filter is selected.
An Overview of External and Submersible Pond Filters
When shopping for pond supplies one will see a wide selection of filters for pond filtration. There are mechanical filters that filter dirt and algae and biological filters that break down waste in the pond water. Generally, smaller ponds use submersible pumps with built-in filters, but large ponds need much larger equipment to deal with the quantity of water in the pond.
Garden ponds typically use submersible filters for pond filtration systems. Submersible filters are enclosed in the pond pump housing and sit inside the pond; they are usually used with fountains. The simplest type of submersible filter has a screen or foam that fits on the inlet side of the pump. When water is drawn into the filter, the screen prevents algae and debris from flowing into the pump’s mechanism. These screens get dirty rather quickly and require regular cleaning.
Submersible filters are independent devices that return water through decorative fountains, making them a pleasing addition to the pond. The fountain attachment usually hides the electrical cord making it a nice addition to the submersible pond filter. The drawbacks of submersible filters are commonly maintenance ones. When performing routine maintenance, the filter has to be pulled up from the bottom of the pond, which makes this an unreasonable pond filtration choice for use in a bigger pond.
External filters come in a wide selection of sizes and shapes. They will sit outside the pond, with water piped to and from the pond. External filters are more complex, but provide more flexibility when it comes to pond filtration systems. An external pond filter is positioned outside the pond and comes in several varieties of filters including gravity flow, pressurized and waterfall. This style of filter is generally used with larger ponds or ponds with a large fish load where high flow rates are necessary.
The main drawback to external pond filtration is size and difficulty to add to a small pond. External filters are more useful than the submersible style of pond filter. They can be concealed from view, allowing the natural look most pond owners take pleasure in. They can be accessed more easily for regular maintenance, so it can be performed on a regular basis. External filters should be used for all but the smallest of ponds.
Both external and submersible filters can have a place in the pond. Submersible filters work well for smaller ponds. They are easy to work with. They are a valuable addition even to larger ponds with external filters. They can have decorative appeal as a fountain and can be used as an extra mechanical or chemical filtration. They are efficient, and give the best functionality of the two. They can be effortlessly plumbed into waterfalls and streams, and hidden from sight. If used in combination with an overflow mechanism, an external pond filter offers an exclusive, natural setting that a submersible filter simply cannot.