Pond Filters: Fish Pond Filters, Accessories and Pond Skimmers

Filtered water then pours out of the filter plumbing downhill to your pond
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While UV will provide clear water it does not filter the pond water. One concern of using UV in a pond is that some people will look at their perfectly clear pond and think that the water quality must be good for the fish. You can have clear water and still have water that would be detrimental to the fish. Always have good biological filtration along with the UV in your pond. You need the biological filter to break down the ammonia given off by the fish and to break down dead organics including the dead algae that is killed by the UV. If you don’t have enough biological filtration then you may see one algae problem disappear (green water) and another one (filamentous algae) replace it.
DIY Canister filter for Water Garden Pond - Tropical Fish Keeping - Aquarium fish care and resources
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Koi Pond filters are the most important piece of pond equipment you will need for your and backyard ponds. If you are planning to have even the first Koi fish, do NOT treat this piece of pond equipment as an option. are just like any other animal in that they excrete waste that would be toxic if it accumulated in their bodies. Fish are threatened if they are exposed to a buildup of toxic waste. You cannot over filter the pond. When buying your filter make sure you can backwash it properly or it's not going to work right. So the design of the filter has to be easy maintenance, and you have to have good flow of the water through the filter, so that all of your filter media and the bacteria is well oxygenated. The design and shape of the filter is important. If you can see a dime on the bottom of the pond, then the water clarity is just right for your fish and filtering past that create headaches, not eliminate them.
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Photo provided by FlickrUse fish pond filtration products to keep your pond or water garden healthy & algae free. Shop for pond skimmers, waterfall filters, filter pads, & more!
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Your water feature's pond pump filter is the most important part of the overall pond. The design, plants, rocks, and even fish can add some great attractive qualities, but no functional purpose. The pond pump and filter serve the main purpose of moving the water and keeping it clean.

Choose the Right Size

Often times, people building a pond in their backyard choose the wrong size pump for their needs. Pumps have a large job that can overwhelm a pump that is too small. A pond pump filter needs to be able to circulate water through a screen-type filter to another filtration tank outside of the pond itself. Then the water is returned through another pipe, usually ending up in a waterfall feature. Most pumps, even ones that are packaged with a pond kit, cannot adequately handle the correct rate that the water must be "changed."

Changing the water refers to circulating the entire capacity of the pond through the filtration device, thus cleaning the entire pond. However, with biological debris and other debris blown in by wind, the pump does not just have to push along water. A typical "change" rate should at least 4 to 5 times an hour. If your pump does not do that now, then you should look into larger pumps.

Construct Filter Box


Your filter is not going to go into the water, so it must be placed in some sort of attractive container or a constructed box. You can hide this with plants or rocks if you choose. This container then goes to the side of the pond, on the farthest end from where you will place the pump.

Connect the wire to the electrical box by running wires, through a plastic PVC conduit underground, from the filter to the electrical supply. Then using hose clamps, you can connect both the inlet hose and the outlet hose, putting both in place where they are going to be hidden from sight.

Install Pump

Run water into the pond until the bottom is covered. This will help you get rid of wrinkles in the liner and show you any low spots. After filling in these spots, and fixing liner, you can place the pump on the bottom of the pond. Your pond pump filter can either be set out freely, or put into a water safe container for aesthetic purposes.

Connect the hoses to the pump to send water to the filter, and begin filling the rest of the pond. After the water is finished filling, plug in the pump, and check to see if the water is running freely (without any clogging or suction noises).

Add Plants and Fish

The major attraction to any pond is not the pond pump filter. It is the plants and fish that you put into it. Let the pump circulate the water for a few days to get rid of any debris from construction and to check the "change" rate. Once everything is set on the pump and the pool, add your biological elements and enjoy.Activated charcoal in the pond filter system provides a natural deterrent to algae. The charcoal keeps the decomposing materials down, as well as helps to reduce the nutrients in the water. Adding charcoal to a pond is an easy way to help keep the algae from overpopulating and taking over your pond. Keep in mind that this is not the kind of charcoal you use for a grill. You can buy charcoal for the pond at the same place you purchase your other pond supplies. Some filters may have a charcoal piece within it, however, it’s more effective to add granular or powdered charcoal to the pond water to control the algae.

White Sand

White sand can provide some filtration for your pond system. It’s not as effective as other methods, but if you use it in conjunction with bio-filtration methods you will see good results. If you have a koi pond, you should steer clear of white sand though. Koi enjoy playing in the materials used on the pond floor and the sand can get in to their gills. If you plan on having a garden pond with no fish, then sand is a good option. Should you decide to use sand, remember to employ other filtration methods to get the best results for your pond.