Gravity Filters | Pond Builder Store

Gravity Filters

Aquascape Pond Filter Urns

Aquascape Pond Filter Urns

The Aquascape Pond Filter Urn is ideal for smaller ponds, including preformed ponds or container water gardens. Aquascape Pond Filter Urn can easily be incorporated into existing ponds with a 1/2" water hose connection, ideal for use with Aquascape Ultra or AquaJet Water Pumps.

Item Max GPH Pond Volume Inlet Fitting Dimensions
Aquascape Pond Filter Urn - Small 77006 - Aquascape Pond Filter Urn - Small
$179.98 $143.98 | 400 Points
400 500 Gallons 1/2" 20"L x 12"W x 10"H Add to Cart
Aquascape Pond Filter Urn - Large 77011 - Aquascape Pond Filter Urn - Large
$349.98 $279.98 | 700 Points
1100 1500 Gallons 3/4" 28"L x 15.5"W x 15.5"H Add to Cart
Evolution Aqua Cetus Sieve

Evolution Aqua Cetus Sieve

The Cetus sieve is a totally new, bow screen pre-filter, made using the latest rotational molding technology. With all of its benefits and build quality, it is undoubtedly the best of its kind on the market today, regarding quality and performance! It is designed to efficiently and effectively remove large amounts of mechanical waste from a pond. It can be set-up gravity OR pump fed and has many benefits over the original bow screen technology. This Cetus has a variable inlet height using the unique patented Pondflow regulation system for use when gravity fed. This allows water levels within the pond to drop without causing the circulating pump to be starved of water. The Cetus will allow a skimmer or a bottom drain to accept vast amounts of waste without excessive cleaning needed to be carried out. The water must then be pumped to either a normal filter above pond level (Nexus Eazy/Eazy Pod) or to a pressurised filter. If pump fed, the sieve is placed above pond water level and then the exit water is gravity dropped into your main filter. The Cetus sieve is a bow screen pre-filter, suitable for pre-filtration of any biological filter including all pressured filters. It is advised that all pressurised filters be pre-filtered using a Cetus to reduce excessive backwashing and maintenance due to heavy solids.

Item Max Flow Inlet Outlet Outlet Waste Screen Dimensions
Evolution Aqua Cetus Sieve - Pump or Gravity Fed CETUSP - Evolution Aqua Cetus Sieve - Pump or Gravity Fed
$1349.99 $1181.49 | 3000 Points
4000 GPH 1.5" 4" 3" 300 Micron 33.5"L x 22.5"W x 37"H Add to Cart
Evolution Aqua Eazy Pod Filters

Evolution Aqua Eazy Pod Filters

A compact member of the Nexus family, the EazyPod is a mechanical and biological filter system for garden ponds up to 5,333 gallons or Koi ponds up to 2,640 gallons. The EazyPod utilises static K1 Micro, which provides enhanced biological benefits, even when using the EazyPod solely as a mechanical waste filter.

Item Max Pond Size No Koi Max Pond Size with Koi Max Flow Rate UV-C Air Pump
Evolution Aqua Eazy Pod Filter EAZYPOD - Evolution Aqua Eazy Pod Filter
$1199.99 $899.99 | 2300 Points
5333 Gallons 2640 Gallons 2640 GPH None None Add to Cart
Evolution Aqua Eazy Pod Filter Air EAZYPODAIR - Evolution Aqua Eazy Pod Filter Air
$1299.99 $1106.99 | 2800 Points
5334 Gallons 2640 Gallons 2640 GPH None AirPump 70 Add to Cart
Evolution Aqua Eazy Pod Complete EAZYPODUV - Evolution Aqua Eazy Pod Complete
$1499.99 $1259.99 | 3200 Points
5335 Gallons 2640 Gallons 2640 GPH 18 Watt AirPump 70 Add to Cart
Evolution Aqua Nexus Eazy Filters

Evolution Aqua Nexus Eazy Filters

Building on the tried and tested technology that has been present in the world renowned Nexus, the team at Evolution Aqua have gone even further to enhance their number one koi pond filter. The Nexus 220+ and Nexus 320+ filters now come with a new filter media called K+ Media in the moving bed outer chamber for vastly improved biological filtration and faster filter maturation. The new Nexus+ filters are now supplied "auto ready", with factory fitted fixings already in place, making it even easier to upgrade to the Nexus Automatic Cleaning System.

Item Max Pond Size Max Flow Rate Nexus Water Volume Inner Chamber Volume Outer Chamber Volume
Evolution Aqua Nexus Eazy 220 Filter NEXEAZ220 - Evolution Aqua Nexus Eazy 220 Filter
$1999.99 $1799.99 | 5000 Points
4800 Gallons 2640 GPH 134.72 Gallons 27.73 Gallons 106.99 Gallons Add to Cart
Evolution Aqua Nexus Eazy 320 Filter NEXEAZ320 - Evolution Aqua Nexus Eazy 320 Filter
$2799.99 $2519.99 | 6500 Points
9000 Gallons 3431 GPH 221.90 Gallons 54.15 Gallons 167.74 Gallons Add to Cart
Matala BioSteps II Filter Kits

Matala BioSteps II Filter Kits

The BioSteps Plus Kit is the basic model. This basic kit comes complete with the new BioSteps filter, MF-1100EZ submersible pump, 25 ft of 3/4" quality "kink free" hose and all connectors to make installation quick and easy!

Item Hose Filter Pump Waterfall UV-C
Matala BioSteps II Plus Filter Kit (No Waterfall) BIOSTEPSPLUS - Matala BioSteps II Plus Filter Kit (No Waterfall)
$410.00 $329.00 | 600 Points
25ft 3/4" Kink Free Hose BioSteps II MP-1100EZ No No Add to Cart
Matala BioSteps II Plus Filter Kit with Waterfall BIOSTEPSPLUS-W - Matala BioSteps II Plus Filter Kit with Waterfall
$450.00 $360.00 | 700 Points
25ft 3/4" Kink Free Hose BioSteps II MP-1100EZ Yes No Add to Cart
Matala BioSteps II Pro Filter Kit with 16 Watt UV-C (No Waterfall) BIOSTEPSPRO - Matala BioSteps II Pro Filter Kit with 16 Watt UV-C (No Waterfall)
$589.00 $475.00 | 800 Points
25ft 3/4" Kink Free Hose BioSteps II MP-1100EZ No EZClear 16 Watt UV-C Add to Cart
Matala BioSteps II Premium Filter Kit with 16 Watt UV-C with Waterfall BIOSTEPSPRO-W - Matala BioSteps II Premium Filter Kit with 16 Watt UV-C with Waterfall
$626.00 $499.00 | 1000 Points
25ft 3/4" Kink Free Hose BioSteps II MP-1100EZ Yes EZClear 16 Watt UV-C Add to Cart
Matala BioSteps II Filters

Matala BioSteps II Filters

Matala BioSteps-II filter maximizes Matala filter media performance. The rugged BioSteps-II contains an amazing 200 sq. ft. of surface area for beneficial bacteria growth. Combined with a cross flow design that traps and processes more debris at high flow rates, you get unparalleled mechanical and biological filtration for superior water quality.

Item Dimensions (LxWxH) Max Pond Size Max Flow
Matala Waterfall for Biosteps II Filter WF - Matala Waterfall for Biosteps II Filter
$41.00 $33.00 | 20 Points
Add to Cart
Matala Waterfall for Biosteps II Filter w/Green Matala Pad and Mesh Bag WF11 - Matala Waterfall for Biosteps II Filter w/Green Matala Pad and Mesh Bag
$45.00 $39.00 | 20 Points
Add to Cart
Matala BioSteps II Filter (No Waterfall, No UV-C) BSTPII - Matala BioSteps II Filter (No Waterfall, No UV-C)
$256.00 $199.00 | 200 Points
23.2" x 15" x 20.2" 2700 Gallons 1060 GPH Add to Cart
Matala BioSteps II Filter w/Waterfall (No UV-C) BSTPII-WF - Matala BioSteps II Filter w/Waterfall (No UV-C)
$298.00 $234.00 | 300 Points
23.2" x 15" x 20.2" 2700 Gallons 1060 GPH Add to Cart
Matala BioSteps II Filter w/16 Watt UV-C BSTPII-16W - Matala BioSteps II Filter w/16 Watt UV-C
$433.00 $342.00 | 400 Points
23.2" x 15" x 20.2" 2700 Gallons 1060 GPH Add to Cart
Oase BioSmart Gravity Filters

Oase BioSmart Gravity Filters

The BioSmart Gravity Filters are a multi-stage mechanical and biological filtration system in a compact package, designed for medium ponds or for ponds with moderate biological load (some fish). During biological filtration, the water is channeled through a series of filter foams that create a special environment by allowing the settling of beneficial bacteria. During this stage, harmful ammonia and nitrites are converted to nitrates, which support plant life in the pond.

Item Max Pond Size Max Pump Size Filter Foams Inlet Size Outlet Size Drain Size UVC Dimensions
Oase BioSmart 5000 Gravity Filter 56929 - Oase BioSmart 5000 Gravity Filter
$247.99 $217.99 | 600 Points
5000 Gallons 2700 GPH 4 3/4" - 1-1/2" 3" 2" - 22"x22"x16" Add to Cart
Oase BioSmart 10000 Gravity Filter 46930 - Oase BioSmart 10000 Gravity Filter
$434.99 $382.99 | 1000 Points
10000 Gallons 3600 GPH 9 3/4" - 1-1/2" 3" 2" 30"x22"x16" Add to Cart
Oase BioTec ScreenMatic Filters

Oase BioTec ScreenMatic Filters

Flow through filters with biological and mechanical filtration clean and clear pond water which flows back down to the pond by gravity. Oase BioTec Screenmatic automatically separates debris using the self-cleaning screen, depositing coarse debris into the removable tray. High efficiency filter system features 3 different densities of foam harboring a variety of beneficial bacteria that remove harmful ammonia and nitrites. Qualifies for the Oase Clear Water Guarantee when paired with the proper pump and UVC Clarifier.

Item Pond Size Max Flow Hose Size Outlet Filter Foams Phosless Filters Dimensions
Oase BioTec ScreenMatic 18000 Filter 42975 - Oase BioTec ScreenMatic 18000 Filter
$1059.99 $932.99 | 2400 Points
18000 Gallons 2900 GPH 1" - 1-1/4" - 1-1/2" 3" Adaptor 8 (2 Blue 3 Red 3 Purple) Add to Cart
Oase BioTec ScreenMatic 24000 Filter 44120 - Oase BioTec ScreenMatic 24000 Filter
$1325.99 $1166.99 | 3000 Points
24000 Gallons 3300 GPH 1" - 1-1/4" - 1-1/2" 4" 16 (4 Blue 6 Red 6 Purple) Add to Cart
Oase BioTec ScreenMatic 38000 Filter 42976 - Oase BioTec ScreenMatic 38000 Filter
$2652.99 $2334.99 | 6000 Points
38000 Gallons 4600 GPH 1" - 1-1/4" - 1-1/2" - 2" 4" 18 (4 Blue 7 Red 7 Purple) Add to Cart