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Wetland Filters

Wetland Filters

Check out our newly redesigned wetland filter components. These new components are designed to simplify installation, maximize surface area for optimal biological filtration, and make cleaning the filter easier than ever!

What is a Wetland Filter?

What is a Wetland Filter?

A wetland filter is a modular, up-flow constructed filtration system mimicking the natural processes of a wetland. Engineered for outstanding water quality, this system is modular, making it scalable for a wide variety of pond sizes.

How Wetland Filtration Works

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1

Snorkel® Vault

Provides a central access point for cleaning and maintaining the wetland filter

2

Snorkel Vault Lid

Protects the Snorkel Vault from debris entry, withstanding foot traffic for safe use

3

Centipede® Module

Distributes water evenly throughout the wetland filter bed for maximum contact with filter media

4

AquaBlox® Water Storage Modules

Act as a settlement chamber, allowing solids to drop out of suspension before the water rises through the filter media

5

FilterBlox™ Modules

Use internal Biological Filter Tubes to maximize surface area, greatly increasing capacity for filtration

6

Centipede End Cap

Provides a convenient connection point for incoming plumbing

Sizing Wetland Filters

Determine the surface area of the water feature that the wetland will filter

 
Measure the surface area of the pond. Max Length x Max Width = Pond Surface Area
Wetland filter pond sizing
 
Use the correct target wetland surface areas below to target optimal wetland size
Target Wetland Surface Areas
For Systems Using FilterBlox Modules
Pond Type % of Pond Size
Ecosystem Pond 5 to 8%
Recreation Pond 12 to 25%
 
Use 380–950 liters per hour per AquaBlox® or FilterBlox™.
 
Use the charts below for typical wetland sizing
 
If you go beyond the charts, use AquaBlox/FilterBlox dimensions to calculate the optimal filter size. For larger or unique projects, call Aquascape for help.
Wetland filter dims example

Ecosystem Pond Wetland Sizing Examples

See common filter size examples and components below.

Pond Size
(sq m)
*Filter SizeW x L (m) Filter Layout
W x L
(see example below)
AquaBlox Required FilterBlox Required Snorkel
Vault Required
Centipede
Module Required
Minimum Excavation
W x L x D (m)
**Minimum
Liner Size
(m)
Optimal Flow Rate
(lph)
13.9 1.4 x .81
(1.1 sq m)
2 x 2 4 4 1 1 1.5 x 1.5 x 1.2 5.2 x 5.2 3,750
20.9 2.1 x .81
(1.7 sq m)
3 x 2 6 6 1 1 2.4 x 1.5 x 1.2 6.1 x 5.2 3,750-5,750
27.9 2.8 x .81
(2.3 sq m)
4 x 2 8 8 1 1 3 x 1.5 x 1.2 6.7 x 5.2 4,500-7,500
55.7 2.8 x 1.7
(4.8 sq m)
4 x 4 16 16 1 2 3 x 2.4 x 1.2 6.7 x 6.1 7,500-15,000
83.6 2.8 x 2.5
(7 sq m)
4 x 6 24 24 1 3 3 x 3 x 1.2 6.7 x 6.7 11,500-22,750
111.5 2.8 x 3.3
(9.2 sq m)
4 x 8 32 32 1 4 3 x 4 x 1.2 6.7 x 7.6 15,000-30,250
148.6 2.8 x 4.1
(11.5 sq m)
4 x 10 40 40 1 5 3 x 4.9 x 1.2 6.7 x 8.5 19,000-38,000
223 2.8 x 6.5
(18.2 sq m)
4 x 16 64 64 1 8 3 x 7.3 x 1.2 6.7 x 11 30,250-45,500
353 5.5 x 4.9
(27 sq m)
4 x 12 (x2) 96 96 2 12 6.1 x 5.5 x 1.2 9.8 x 9.1 38,000-56,750
464.5 5.4 x 6.5
(35 sq m)
4 x 16 (x2) 128 128 2 16 6.1 x 7.3 x 1.2 9.8 x 11 47,250-75,750
929 11 x 6.5
(71.5 sq m)
4 x 16 (x4) 256 256 4 32 11.9 x 7.3 x 1.2 15.5 x 11 94,750-151,500
1,393.5 16.4 x 6.5
(106.6 sq m)
4 x 16 (x6) 384 384 6 48 17.4 x 7.3 x 1.2 21 x 11 151,500-227,000

*Filter size reflects components only; surrounding backfill excluded.
** Note: Listed liner dimensions contain only the wetland filter and backfill and do not include any liner needed for outflow into the pond. In most installations, a larger liner will be required to accommodate outflow as well as outcroppings, plantings, and boulders around the filter.

Recreational Pond Wetland Sizing Examples

See common filter size examples and components below.

Pond Size
(sq m)
*Filter SizeW x L (m) Filter Layout
W x L
(see example below)
AquaBlox Required FilterBlox Required Snorkel
Vault Required
Centipede
Module Required
Minimum Excavation
W x L x D (m)
**Minimum
Liner Size
(m)
Optimal Flow Rate
(lph)
18.6 2.8 x 1.7
(4.8 sq m)
4 x 4 16 16 1 2 3 x 2.4 x 1.2 6.7 x 6.1 7,500-15,000
27.9 2.8 x 2.5
(7 sq m)
4 x 6 24 24 1 3 3 x 3 x 1.2 6.7 x 6.7 11,300-22,750
37.2 2.8 x 3.3
(9.2 sq m)
4 x 8 32 32 1 4 3 x 4 x 1.2 6.7 x 7.6 15,000-30,250
74.3 2.8 x 6.5
(18.2 sq m)
4 x 16 64 64 1 8 3 x 7.3 x 1.2 6.7 x 11 24,500-45,500
130.1 5.5 x 4.8
(26.4 sq m)
4 x 12 (x2) 96 96 2 12 6.1 x 5.5 x 1.2 9.8 x 9.1 38,000-56,750
167.2 5.5 x 6.5
(35.8 sq m)
4 x 16 (x2) 128 128 2 16 6.1 x 7.3 x 1.2 9.8 x 11 47,250-75,750
325.2 11 x 6.5
(71.5 sq m)
4 x 16 (x4) 256 256 4 32 11.9 x 7.3 x 1.2 15.5 x 11 94,500-151,500
464.5 16.4 x 6.5
(106.6 sq m)
4 x 16 (x6) 384 384 6 48 17.4 x 7.3 x 1.2 21 x 11 151,500-227,000
696.8 21.9 x 6.5
(142.4 sq m)
4 x 16 (x8) 512 512 8 64 22.9 x 7.3 x 1.2 26.5 x 11 189,250-284,000

*Filter size reflects components only; surrounding backfill excluded.
** Note: Listed liner dimensions contain only the wetland filter and backfill and do not include any liner needed for outflow into the pond. In most installations, a larger liner will be required to accommodate outflow as well as outcroppings, plantings, and boulders around the filter.

Step-by-Step Installation Instructions

Click Here for Step-by-Step Instructions

Features of the Wetland Filtration System

Features of the Wetland Filtration System

FilterBlox®with integrated Biological Filter Tube provide maximum surface area for biological filtration, optimized cleaning, and flow during filtration.

The new Snorkel Vault lets you expand in both directions, allowing you to extend your wetland.

Need more filtration? Pair Snorkel®Vault Extensions with additional FilterBlox™for more filtration, great for heavy fish loads, high human interaction, or limited space.

Wetland Filter Videos & Applications

Boerner Botanical Garden

A large, stormwater management system captures excess run-off and guides the water through a large, constructed wetland filter.

Children’s Museum of Sonoma County

A sustainable and interactive stream is recirculated through a large wetland filtration system, showcasing the importance of native wetlands to the health of local aquatic ecosystems.

Freshwater Plaza

The Freshwater Plaza in the heart of Milwaukee features the Aquascape Rainwater Harvesting System combined with a unique wetland filter.

Phipps Conservatory

A bog filter and large rainwater collection system were installed at the Center for Sustainable Landscapes at Phipps Conservatory in Pittsburgh.

Wetland Filter FAQs and Resources

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