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Tunze 3181 Macro Algae Reactor

Brand: Tunze USA
Product Code: 3181.000
Availability: In Stock
$399.99 $399.99
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The TUNZE® 3181 Macro Algae Reactor is a free standing Refugium can be easilt adapted to any aquarium. Placed in a sump, or under a AIO tank without an external filter, this "little beast" is very adaptable. Tunze has rectified the problem in that the algae in a standard refugium stays static to the light source, where this Refugium benefits from the circulation of water in the reactor ensures that the algae culture rotates and reduces the number of light sources.

The included Tunze Eco Chic Refugium LED is a unique waterproof light with a spectrum suited for refugium macro-algae growth in marine or freshwater systems. 

The Macro Algae Reactor also includes a DC feed pump as well as all needed plumbing making for a quick and effortless install - just add algae and you are good to go. The pump spins the algae within the reactor so that all the algae can make full utilization of the lighting system to properly photosynthesize and grow.


Macro Algae Reactor 3181

For Aquariums from 25 to 160 Gallons (100 to 600 liters)

Flow rate of 130 - 320 US Gallons (500 - 1,200 l/h)

Energy Consumption with Pump is Only 20 W

Measurements of the Reactor  9.2" x 7.7" x 16.6"(L x W x H): (233 x 195 x 422mm)

With Comline® Pump 2500 electronic and Turbelle® Controller basic 7090.200.


Functions of the TUNZE® algae reactor MAR 3181:

Cultivation of algae in seawater and plants in freshwater

Biological detoxification of ecosystems by algae / plants

Reduction of nitrate and phosphate content

Filtration of the aquarium water

Production of food supplement for fish

Zooplankton refuge, serving as food for corals and fish

Enrichment of the water with oxygen


Macro Algae Reactor

The Macro Algae Reactor MAR 3181 is specially constructed to cultivate algae in seawater and plants in freshwater.

Chaetomorpha "Spaghetti Algae" is cultured by many marine aquarists to eliminate nitrates and phosphates from the aquatic biotope. It is recommended to harvest a handful of algae from time to time to maintain the biological balance in an aquarium – an economical and easy alternative to many chemicals or resins.

Naja Grass, Najas guadalupensis, can be grown to purify freshwater systems,

such as cichlid biotopes.

TUNZE® MAR 3181 can be placed in any filter basin or next to the aquarium without external filter technology.

The water circulation in the reactor ensures the rotation of the algae culture and thus reduces the number of light sources accompanied by strong plant growth. However, additional light sources can be added to the device as needed.



• Reactor

• LED eco chic refugium 8831 9 Watts

• Circulation pump Comline® Pump 2500 electronic 20 watts

• Turbelle® Controller basic 7090.200

• Silicone hoses