


Oase Biomaster2 Thermo 850 External Filter
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Oase Biomaster2 Thermo 850 External FilterThe BioMaster 850 Thermo external filter fulfils the highest demands of water filtration and filter cleaning. The combination of highly effective biological filtration by Hel X and mechanical biological cleaning by filter sponges ensures healthy and clear aquarium water. The HeatUp 400 adjustable heater is included in the scope of delivery. The BioMaster 850 Thermo is suitable for aquariums with a volume of up to 850 litres. The EasyClean pre filter
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.2 ★★★★★
Based on 1183 reviews
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Product Reviews
★★★★★ 2
Weird smell and reduction in air flow
The filter has a strange smell to it which I am not sure if mentioned in the description. It also seemed to reduce air flow due to the addition of the carbon pellets. Had to run the fan on full to get same amount of air flow usually occurring on 3.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
★★★★★ 5
Easily Replaceable Filter 2023 Jeep Laredo
Fits 2023 Jeep Grand Cherokee Laredo Altitude and took all of 10mins to replace by a girl.
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Reviewed in the United States on March 8, 2025
★★★★★ 5
Great filter!!
Great filter, easy to install.
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Reviewed in the United States on April 9, 2025
★★★★★ 5
Price
Very nice active coal
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Reviewed in the United States on February 6, 2025
★★★★★ 2
Weird Smell
Good for but the carbon has a weird smell. I have a sensitive nose and I'm not a fan. Going to replace with a regular filter without the activated carbon.
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Reviewed in the United States on October 1, 2025