Gravity Pond Filters Gravity Pond Filters Gravity pond filters are some of the most cost effective and low maintenance filter systems available. Browse filter systems available at Webb's Water Gardens.
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OASE BioSmart Gravity Filters
OASE BioPress UVC Filter 20-25 free gift certificate

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.

  • Innovative Flow-Through filter design provides maximum oxygenation
  • High-surface area filter foams provide exceptional biological filtration capability
  • Distinct filter zones promote the settlement of a variety of beneficial bacterial responsible for different phases of the nitrogen cycle, which increases the conversion of harmful ammonia in your pond
  • Advanced features include the built-in cleaning indicator notifies you when the filter needs cleaned and water temperature display tells you the water temperature at all times
  • Cleaning handles for convenient maintenance allow for easy cleaning without needing to remove or manually unclog the filter foams
  • After clearing the filter foams, the sludge drain can be opened for easy removal of coarse debris from the unit
  • For best results and clear water guaranteed, use with an appropriately sized OASE pump and UV clarifier

OASE BioSmart Gravity Filters

Item Icons Max Pond Size Max Pump Size No. of Filter Foams Inlet Size Outlet Size Drain Size UVC Dimensions Add
5,000 Gal
2,700 GPH
4
3/4" - 1-1/2"
3"
2"
-
22" x 22" x 16"
10,000 Gal
3,600 GPH
9
3/4" - 1-1/2"
3"
2"
-
30" x 22" x 16"
OASE BioSmart Gravity Filters Replacement Parts
Oase BioTec ScreenMatic² Filter

Flow through filters with biological and mechanical filtration clean and clear pond water which flows back down to the pond by gravity. Oase BioTec Screenmatic² 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.

Features:

  • Intelligent cleaning sensor senses debris and activates cleaning screen
  • Manual belt run button for manual operation of cleaning screen
  • LED indicates status of cleaning bar and screen
  • Rubberized separator lip scrapes debris off screen and into tray
  • Removable sludge tray for easy maintenance
  • Built-in overflow holes keep filter operational even when sludge tray is full
  • Sludge drain with integrated slide valve removes sludge and dirty water from system
  • Optimized water distributor evenly disperses water flow over screen
  • Add an optional Bitron C UVC clarifier to any ScreenMatic² filter system for enhanced clarity and cleaner water

Oase BioTec ScreenMatic² Filter

Item Pond Volume Max Flow Hose Size Outlet Filter Foams Phosless Filters Dimensions Add
Oase BioTec 18000 ScreenMatic² (MPN 42975)
$1,112.99 $978.99 | 2,393 Points
18,000 gal
2,900 GPH
1", 1-1/4", 1-1/2"
3" adaptor
8 (2 blue, 3 red, 3 purple)
2
31"L x 23"W x 21.5"H
Oase BioTec 24000 ScreenMatic² (MPN 44120)
$1,391.99 $1,224.99 | 2,993 Points
24,000 gal
3,300 GPH
1", 1-1/4", 1-1/2"
4"
16 (4 blue, 6 red, 6 purple)
4
31"L x 23"W x 25.4"H
Oase BioTec 38000 ScreenMatic² (MPN 42976)
$2,785.99 $2,451.99 | 5,990 Points
38,000 gal
4,600 GPH
1", 1-1/4", 1-1/2", 2"
4"
18 (4 blue, 7 red, 7 purple)
12
47"L x 31.5"W x 30"H
Oase BioTec ScreenMatic² Replacement Parts
Bermuda Pump & Filter Kits

Pump, Filter, UVC & Tubing Complete Package

The Bermuda Pond Filter Kit makes pond filtration easy, including the right filter and UV clarifier to clear water in small to medium garden ponds. The filter box can be part buried for discrete placement and sponges cleaned at the pull of a handle.

  • Pump, Filter, UV & Tubing included
  • Solids handling pump
  • Powerful UV Clarifier
  • Mechanical & Biological Filtration
  • Easy to clean sponges

Bermuda Pump & Filter Kits

Item Icons Max. Pond Size Pump UV Tubing Add
1,500 gal
400 GPH
9W
15 ft
2,400 gal
500 GPH
11W
15 ft
Aquascape Pond Filter Urn

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.

  • Great add-on filtration for any size existing pond
  • Simple to use and maintain
  • The removable filter lid allows easy access for cleaning and maintenance
  • Connects to most water pumps with 1/2" connection
  • Ideal for use in smaller ponds or container water gardens up to 500 gallons
  • Quickly adds the sight and sound of trickling water to ponds without waterfalls or streams
  • Comes complete with mechanical and biological filter media

Aquascape Pond Filter Urn

Item Icons Max GPH Pond Volume Inlet Fitting Dimensions Dimensions Add
Aquascape Pond Filter Urn (MPN 77006)
$249.98 $199.98 | 500 Points
400
500 gal
1/2"
20"L x 12"W x 10"H
1,100
1,500 gal
3/4"
28"L x 15.5"W x 15.5"H

Aquascape Pond Filter Urn

Item Icons Add
 
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.

Includes:

  • State of art progressive filtration - 2 Green Matala Pads, 2 Blue Matala Pads, 2 Gray Matala Pads. 
  • "Swivel Inlet Fitting" with 3/4", 1", 1-1/4" and 1-1/2" barbed size
  • Outlet fitting for 1-1/2" or 2" pipe connection or connection to optional Waterfall Spillway. The tank is an open flow "gravity return" to the pond.
  • Enhances growth of different ecological communities of bacteria that will colonize in the filter.
  • Sloped bottom with extra sink at outlet for easy draining of waste.
  • Rugged and modular design allows for future expansion.
  • Available with UV or waterfall spillway

Matala BioSteps-II Filters

Item Icons Dimensions (LxWxH) Ponds Up To (Gallons) Max Flow UV Add
23-3/16" x 15" x 20-3/16"
2,700
1,060 GPH
-
Out of Stock
23-3/16" x 15" x 20-3/16"
2,700
1,060 GPH
16 watt
23.2" x 15" x 20.2"
2,700
1,060 GPH
-
Out of Stock
Evolution Aqua Nexus Filtration Systems

Advanced filtration systems for Koi ponds now with NEW K+ Media

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.

How the Nexus Works

Water from the pond enters the nexus via the inlet into the inner chamber which works as a vortex, allowing larger solids to settle out. Water then passes through the grills in the stainless steel “Eazy” filter, where the finer particles are removed by the static bed K1 Micro® filter media. The clean water then passes to the outside chamber of the Nexus for biological treatment before returning to the pond. At this stage, biological breakdown occurs through different strains of bacteria and filter feeders living on the protected surface area of each K1+ Media filer. The bacteria convert Ammonia and Nitrite into less harmful Nitrate. Water then passes through the exit grill into the outlet and returns to the pond.

Evolution Aqua Nexus Filtration Systems

Item Icons Max Pond Size Max Flow Rate Volume of Water in Nexus Volume of Water in Inner Chamber Volume of Water in Outer Chamber Add
4,800 gal
2,640 GPH
134.72 Gal
27.73 Gal
106.99 Gal
9,000 gal
3,431 GPH
221.90 Gal
54.15 Gal
167.74 Gal
4,800 gal
2,640 GPH
134.72 Gal
27.73 Gal
106.99 Gal
9,000 gal
3,431 GPH
221.90 Gal
54.15 Gal
167.74 Gal
Evolution Aqua Eazy Pod

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.

  • Mechanical and biological filtration.
  • Very eazy to install and operate.
  • Quick and eazy cleaning cycle.
  • Works equally well pump or gravity fed.
  • Ideal as a filter on a quarantine system.
  • Also ideal for use as a pre-filter, polisher or on a skimmer line.

Evolution Aqua Eazy Pod

Item Icons Max Pond Size with ornamental fish Max Pond Size with Koi Max Feed Rate Volume of Water in Filter Max Flow Rate AirPump UV-C Dimensions Add
Evolution Aqua Eazy Pod (MPN EAZYPOD)
$1,049.99 $944.99 | 2,362 Points
5,333 Gal
2,640 Gal
100g-125g per day
21 Gal
2,640 gal
-
-
26"H x 28"L x 23"W
5,333 Gal
2,640 Gal
100g-125g per day
21 Gal
2,640 gal
AirPump70
-
26"H x 28"L x 23"W
2,640 Gal
2,640 Gal
100g-125g per day
21 Gal
2,640 gal
AirPump70
18 Watt PL-L
26"H x 28"L x 23"W

Evolution Aqua Eazy Pod

Item Icons Add
 
Evolution Aqua Eazy Pod Automatic

The EazyPod Automatic is a self-cleaning, mechanical and biological filter system for ponds up to 2,640 gallons.

The integrated control box contains an adjustable timer which initiates a cleaning cycle automatically - meaning your filter will clean itself even when you’re not there! Inside the control box, the electronic connector blocks control the automated waste valve, along with your choice of circulating pump (not supplied). It even houses an integral air pump which kicks in automatically to clean the K1 Micro media.

Crystal clear, healthy water is achieved by K1 Micro filter media, which also provides enhanced biological benefits by way of its protected surface area.

The Eazypod UV Automatic features an integrated 18 Watt UVC built in to the inlet section of the filter, helping to clear green water. Available in 2 models, users can select either the EazyPod Automatic or the EazyPod UV Automatic (with built-in 18 watt UV). 

Evolution Aqua Eazy Pod Automatic

Item Icons Max Pond Size with ornamental fish Max Pond Size with Koi Max Feed Rate Volume of Water in Filter Max Flow Rate AirPump UV-C K1 Micro Dimensions Add
Evolution Aqua Eazy Pod Automatic
$1,749.99 $1,574.99 | 3,937 Points
2,640 Gal
2,640 Gal
100g-125g per day
21 Gal
2,640 gal
Built-in inside control box
-
4.75 Gal
26"H x 24"L x 23"W
2,640 Gal
2,640 Gal
100g-125g per day
21 Gal
2,640 gal
Built-in inside control box
18 Watt PL-L
4.75 Gal
26"H x 24"L x 23"W
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.

Evolution Aqua Cetus Sieve

Item Icons Max Flow Inlet Outlet Outlet Waste Screen Dimensions Add
4,000 GPH
1.5"
4"
3"
300 micron
33.5"L x 22.5"W x 37"H
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