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https://www.swelluk.com:443/oase-biomaster-thermo-external-filters/ 
Oase BioMaster Thermo External Filters
The BioMaster can not only be conveniently concealed in the aquarium base cabinet, it is also easy to clean. The prefilter can be completely removed, simply rinse out and re-insert it - neat and clean thanks to the EasyClean prefilter module. The aquarium filter is available with or without the HeatUp adjustable heater.
Products
Product Information
The BioMaster Thermo is an external filter for aquariums between 250 and 600 litres in size with high fish stock. It offers convenience for the most rigorous requirements.
These BioMaster Thermo external filters are packed with a combination of mechanical and highly effective biological filter media meaning a much larger surface area for bacteria to colonise resulting in cleaner clearer water. Replacement foams are available at Swell UK. The BioMaster Thermo ensures discrete highly efficient filter technology outside of your aquarium!
Included is all the filter media, hoses, adaptor, intake and outflow tube, as well as water diffuser. Suitable for both freshwater and marine aquariums and guaranteed for 3 years. The sister BioMaster is also available to buy from Swell UK.
| Suitable Aquarium Size (Max.) | Dimensions (LxWxH) | Power Consumption Filter & Heater | Guarantee | Max. Flow Rate | Max. Head Height | Hose (Qty/Lgth) | Connection for hoses ø (inner/outer) | Filter Volume | Prefilter Volume | Suitable for Freshwater | Suitable for Saltwater | |
| 250 | 250L | 240 x 240 x 370mm | 15 + 150w | 3 + 1 Years | 900 l/h | 1.3m | 1 Unit/4m | 16/22mm | 4.4l | 0.40l | Yes | Yes |
| 350 | 350L | 240 x 240 x 425mm | 18 + 200w | 3 + 1 Years | 1100 l/h | 1.4m | 1 Unit/4m | 16/22mm | 5.6l | 0.50l | Yes | Yes |
| 600 | 600L | 240 x 240 x 480mm | 22 + 300w | 3 + 1 Years | 1250 l/h | 1.8m | 1 Unit/4m | 16/22mm | 6.8l | 0.60l | Yes | Yes |
Latest Customer Reviews
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Rating Date 18/03/2020 20:03pm Oase BioMaster Thermo 250
Filter very good value and arrived on time -
Rating Date 28/01/2019 08:01am Oase BioMaster Thermo 600
It’s a great filter. Very easy to set up and use. -
Rating Date 22/10/2018 06:10am Oase BioMaster Thermo 250
Not yet installed but everything you want from an external filter -
Rating Date 01/09/2018 06:09am Oase BioMaster Thermo 600
Easy set-up. So much easier to maintain than my previous unit. Very impressed.