Best External filter

  • CASCADE CANISTER FILTER FOR FRESHWATER OR MARINE...
  • STATE OF THE ART FEATURES OF THE CASCADE 1000: ♦ flow...
  • USE ANY COMBINATION OF MEDIA: floss pad for removing...
  • Permo-elastic silicon sealing ring fixed on the pump head...
  • Equipped with filter sponges and/or loose filter media
  • Accessories included: spray bar, inlet pipe, hose and...
  • Water filter for nano tanks and aquariums up to 10 gallons
  • Created for use in both freshwater and saltwater aquariums
  • Designed to be easy for new users to prime, customize, and...
  • Water filter for nano tanks and aquariums up to 10 gallons
  • Created for use in both freshwater and saltwater aquariums
  • Designed to be easy for new users to prime, customize, and...
  • Good for up to 20 gallon fish tanks
  • Dimension: 6.5" L X 6.5" W X 11" H
  • Flow rate: 106 GPH (400L/hr.)
  • LCD Display that allows users to adjust the flow rate of the...
  • Flow rate: up to 793 Gallons per hour (adjustable)
  • 9W UV sterilizer, perfect for maintaining a clean and clear...

Our Top External filter Pick

Penn Plax Cascade CCF3UL Canister Filter For Large Aquariums and Fish Tanks – Up To 100 Gallons, Filters 265 GPH,Blue
  • CASCADE CANISTER FILTER FOR FRESHWATER OR MARINE ENVIRONMENTS: the Cascade 1000 (CCF3UL) has 3 media baskets, works at 265 GPH, and is recommended for Aquariums up to 100 gallons. It measures 11.5 x 17 x 10 inches.
  • STATE OF THE ART FEATURES OF THE CASCADE 1000: ♦ flow valves that rotate 360 degrees for easy maneuvering in even the tightest aquarium cabinets ♦ large capacity media baskets allow aquarists to customize to their media needs ♦ push button primer allows for a quick and easy prime of the filter ♦ includes a spray bar, tubing, directional spout for customization, and filter medium.
  • USE ANY COMBINATION OF MEDIA: floss pad for removing particulate matter and a course sponge that provides abundant surface for promoting bacterial growth (to remove ammonia and nitrites) included free with purchase
  • SEE BELOW FOR DIAGRAM, THE CASCADE 1000 INCLUDES: ♦ Flow rate control cut-off valves ♦ two independent directional 360 degree rotating valve taps ♦ swimming pool – style hose clamps ♦ quick, easy, push button self-primer ♦ extra-large capacity stackable filter medium containers with lift-up handles ♦ floss pad and coarse sponge included, free with each canister filter ♦ easy lift alignment clamps that release vacuum suction ♦ sturdy tip-proof base
  • FILTER MEDIA OPTIONS BY CASCADE AVAILABLE ON AMAZON, SOLD SEPARATELY: see below for details, sold separately is media such as: bio-floss, bio-sponge, bio-rings, filt-a-pack pro-z, and filt-a-pack pro-carb-z.

Everything for animals: External filter Video Guide

External filters are not sunk into the garden pond, but positioned outside the water surface. This measure provides advantages and allows the filter, for example, to be checked at any time for functionality and performance. In case of defects, the filter does not have to be removed from the pond, but can simply be replaced directly and without great effort by a new model. External filters are available in different sizes and therefore with different capacities. Especially for larger ponds with a water volume between 5,000 and 80,000 litres, external filters are preferable and provide a clean habitat for plants and fish. In fish ponds, external filters are the better choice due to their larger water passage than internal filters, with which the pond can be kept only conditionally and often not sufficiently clean.

Filter systems are based on an identical concept and serve to produce oxygen exchange in the water and to clean the garden pond of unwanted contamination. The more water there is in the pond and the larger it is, the more powerful the filter must be. In large garden ponds, external filters have proved their worth due to their higher performance and are mainly used because they can allow large quantities of water to pass through and process them within a short time. For an external filter to fulfil its function without restriction and to be suitable for the size and quantity of water in the garden pond, its performance must be adapted to the local conditions. With the right filtration, every pond becomes a biotope and is suitable as a healthy habitat for aquatic plants and fish

External filters are particularly powerful and are suitable for very large garden ponds or natural ponds on the property. However, they also require more power than proportionally much smaller internal filters. You also need a footprint that offers enough space for the voluminous size and allows the external filter to be made practical and usable. On slopes or in dense undergrowth, it is very difficult to place an external filter, which can present a greater challenge for filtering the garden pond. As there are different sizes, capacities and operating modes of external filters, it is important to find out the right model for your garden pond through consultation and to ensure that the capacity is matched to the quantity of water.

High-quality external filters can be relatively cost-intensive and require a lot of space on the property. A selection based on quality should therefore be the focus and help to make the right decision and to purchase the external filter to match the garden pond. The power indicated by the manufacturer is only an indication and should not be used as the sole criterion for the decision. It is more helpful if pond owners look around in the evaluations of other buyers and find out there which external filter convinces in price and performance and fits to their own garden pond. Test reports also support the purchase and prevent wrong decisions. If an external filter is not powerful enough and cannot circulate the existing water quantity, the garden pond will not be completely cleaned and in the worst case can tip over due to contamination. The oxygen content is also sustainably influenced by the external filter and serves as the basis of life for plant and animal inhabitants in the water. When buying external filters, comparisons can be helpful and generally rule out the problem of too little performance or too high energy consumption.

TOP 5 External filter Bestseller

Penn Plax Cascade CCF3UL Canister Filter For Large Aquariums and Fish Tanks – Up To 100 Gallons, Filters 265 GPH,Blue
  • CASCADE CANISTER FILTER FOR FRESHWATER OR MARINE ENVIRONMENTS: the Cascade 1000 (CCF3UL) has 3 media baskets, works at 265 GPH, and is recommended for Aquariums up to 100 gallons. It measures 11.5 x 17 x 10 inches.
  • STATE OF THE ART FEATURES OF THE CASCADE 1000: ♦ flow valves that rotate 360 degrees for easy maneuvering in even the tightest aquarium cabinets ♦ large capacity media baskets allow aquarists to customize to their media needs ♦ push button primer allows for a quick and easy prime of the filter ♦ includes a spray bar, tubing, directional spout for customization, and filter medium.
  • USE ANY COMBINATION OF MEDIA: floss pad for removing particulate matter and a course sponge that provides abundant surface for promoting bacterial growth (to remove ammonia and nitrites) included free with purchase
  • SEE BELOW FOR DIAGRAM, THE CASCADE 1000 INCLUDES: ♦ Flow rate control cut-off valves ♦ two independent directional 360 degree rotating valve taps ♦ swimming pool – style hose clamps ♦ quick, easy, push button self-primer ♦ extra-large capacity stackable filter medium containers with lift-up handles ♦ floss pad and coarse sponge included, free with each canister filter ♦ easy lift alignment clamps that release vacuum suction ♦ sturdy tip-proof base
  • FILTER MEDIA OPTIONS BY CASCADE AVAILABLE ON AMAZON, SOLD SEPARATELY: see below for details, sold separately is media such as: bio-floss, bio-sponge, bio-rings, filt-a-pack pro-z, and filt-a-pack pro-carb-z.
EHEIM Classic Canister Filter 2213, Classic 250 - PetOverstock
  • Permo-elastic silicon sealing ring fixed on the pump head for easy and safe closing after cleaning
  • Equipped with filter sponges and/or loose filter media
  • Accessories included: spray bar, inlet pipe, hose and installation accessories
  • Comes complete with filter media (EHEIM Mech & Substrat Pro) and valves
  • Permo-elastic silicon sealing ring fixed on the pump head for easy and safe closing after cleaning
SunSun Tech'n'Toy HW-602B 106 GPH 3-Stage External Canister Filter
  • Good for up to 20 gallon fish tanks
  • Dimension: 5.7" L X 5.7" W X 10" H
  • Flow rate: 106 GPH (400L/hr.)
  • Pump Power: 6W
  • Includes filter pads, hoses and all parts to get started
Zoo Med Nano 10 External Canister Filter, up to 10 Gallons
  • Water filter for nano tanks and aquariums up to 10 gallons
  • Created for use in both freshwater and saltwater aquariums
  • Designed to be easy for new users to prime, customize, and even open
  • This filter was also built to be convenient with a compact, space saving design and quiet, anti vibration brushings
  • Package includes the Nano 10 external canister filter, spray bar system for greater aeration, mechanical filter sponge, bio ceramic filtration media, and carbon chemical filtration media
SunSun Tech'n'Toy HW-603B 106 GPH 3-Stage External Canister Filter
  • Good for up to 20 gallon fish tanks
  • Dimension: 6.5" L X 6.5" W X 11" H
  • Flow rate: 106 GPH (400L/hr.)
  • Pump Power: 6W
  • Includes filter pads, hoses and all parts to get started