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Underground Detention/Retention Tank (Attenuation)
A Detention Tank using Atlantis Matrix® Tank Modules is water flow control system, which is man-structured. Similar to an infiltration tank, these underground tanks are designed contain stormwater or wastewater for a limited time. However, instead of being spread into the surrounding soil bed, the water remains in the tank. It can then be pumped out via motorised pump, or structurally piped to flow into the sewer or council drainage. Alternatively, it may enter a discharge control pit.
Atlantis' unique product is a highly cost-effective and environmentally responsible alternative to concrete tanks. Thanks to their 85% recycled plastic materials and cohesive design, you can create a detention tank which is cheaper, lighter and stronger. Each tank comes flat packed in bundles of large and small plates for easy, compact transportation to your site. No cranes or lifting equipment required!
Installation takes only a few minutes for each tank and can be modified to suit your specific requirements by varying the number of internal plates and stacking modules on top of each other. With more than 95% void surface area, Matrix units can hold 950 litres of water per cubic metre of tank.
View the full range of Atlantis underground tanks below or contact Eco Sustainable House on (07) 5609 6680 to discuss your requirements.
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Flo Tank Module Specifications
Detention Tank (Flo Tank)
Geofabric (Geotextile, Hydrophilic)

Geofabric (Geotextile, Hydrophilic)
$89.00
140GSM Geofabric / Geotextile 2x50m & 1x50m Our Geofabric is a polymer based material. It is hydrophillic which allows the water to pass through smoothly. This geo is best used with the Atlantis Flo tanks to create a detention tank, rainwater harvesting and storm water tanks, septic tank, infiltration tank, retaining walls, drainage cell, a...
Single Flo Tank
Single Flo Tank
$39.95 $48.60
Atlantis Single Flo Tank These lightweight, flexible underground water filtration and storage modules are the complete solution for your urban water management needs. This Atlantis Single Flo Tank can maximise your water storage with a capacity of 119 Litres per unit thanks to a 95% void volume. Suitable for use as an Infiltration Tank to recha...
Double Flo Tank
Double Flo Tank
$73.30 $95.25
Atlantis Double Matrix Flo Tank The Atlantis Double Flo Tank system can not only hold water for attenuation, infiltration and rain harvesting, but can be utilised for irrigation in planter boxes or as void fill in landscaping. Made from 85% recycled polypropylene, each of the durable modules weigh just over 14kg (internal plate configuration de...

Small Filtration Unit (Flo Screen)
$510.50
Atlantis Small Filtration Unit for Flo Tanks The Small Filtration Units are designed to screen and filter gross pollutants, such as vegetation matter and silt from roofs and stormwater pits to ensure clean filtered water enters the Atlantis flo tank system. The screen collects pollutants as small as 180 microns. Easy to Use!The Atlantis Filtrati...
Penta Flo Tank
Penta Flo Tank
$165.40
Atlantis Penta Flo Tank Atlantis' Penta Flo Tank is a comprehensive water management tool recognised as the industry standard. Atlantis Matrix tanks aren't just capable of filtering, irrigation, use as an infiltration tank, a water detention tank and rainwater harvesting, the approximately 32kg module can also be used as structural void fill fo...
Triple Flo Tank
Triple Flo Tank
$100.00
Atlantis Triple Flo Tank Whether you need to meet tough local council requirements or strict urban design criteria, the Atlantis Triple Flo Tank is the industry standard in water management. Eco Sustainable House are Queensland's leading distributor of Atlantis' environmentally friendly products. 1,310mm high and weighing just under 20kg per mo...
Large Filtration Unit (Flo Screen)
Large Filtration Unit (Flo Screen)
$790.00
Atlantis Large Filtration Unit for Flo Tanks The Large Filtration Units, also known as the Atlantis Flo Screen, are designed to filter out gross pollutants as small as 180 microns. This includes vegetation matter, dirt and silt from roofs and stormwater pits, ensuring that clean filtered water enters the Atlantis flo tank system. The Atlantis Fi...
Quad Flo Tank
Quad Flo Tank
$132.10
Atlantis Quad Flo Tank If you need to maximise usable land and minimise rain runoff, Atlantis’ Quad Flo Tank is the right choice for your next urban water management or landscaping project. Suitable for use as an infiltration tank, detention tank, void fill, harvesting rainwater, creating landscaping mounds and even as irrigation in planter boxe...