OASE BioStyle Thermo 50 Grey is a high-capacity hang-on-back aquarium filter combining powerful multi-stage filtration with an integrated aquarium heater. Designed for aquariums up to approximately 180 L / 50 US gallons, the BioStyle Thermo 50 delivers up to 900 L/h of circulation while keeping the aquarium heater outside the display.
The larger BioStyle Thermo 50 provides generous filtration capacity without requiring a traditional external canister, hoses, or an internal heater. Mechanical, biological, and chemical filtration are combined with adjustable flow, a telescopic intake, and OASE's EasyClean maintenance indicator.
For planted aquariums and aquascapes, the integrated OASE HeatUp 50 heater helps create a cleaner presentation by reducing visible equipment inside the aquarium.
The BioStyle Thermo 50 integrates an OASE HeatUp 50 heater directly into the filtration system, eliminating the need to position a separate heater prominently inside the display aquarium.
This provides a particularly clean appearance in planted aquariums and aquascapes while keeping aquarium inhabitants away from direct contact with the heating element.
The included heater is preset to approximately 79°F / 26°C.
With a maximum flow rate of approximately 900 litres per hour, the BioStyle Thermo 50 provides substantial circulation for a hang-on-back filtration system.
Built-in flow adjustment allows circulation to be reduced or increased according to the aquarium's requirements. This is especially useful in planted aquariums where aquascape layout, plant density, and livestock can all influence the ideal amount of water movement.
The BioStyle Thermo 50 features a generous 2.7 L filter volume and uses multiple filtration stages to help maintain clean aquarium water.
Three multi-stage cartridges incorporate filter foam, chemical filtration media, and fine filter fleece, providing mechanical, chemical, and biological filtration.
Three additional 30 PPI biological filter foams provide valuable surface area for beneficial bacteria while also contributing additional mechanical filtration.
The integrated EasyClean indicator provides a convenient visual indication when the filter requires attention, helping simplify routine aquarium maintenance.
Filter cartridges and biological foam are easily accessible without disconnecting hoses or opening a traditional external canister filter.
| Specification | Details |
|---|---|
| Manufacturer | OASE |
| Model | BioStyle Thermo 50 Grey |
| OASE SKU | 84069 |
| Filter Type | Hang-On-Back External Filter with Integrated Heater |
| Aquarium Capacity | Up to 180 L / approx. 50 US gal |
| Maximum Flow | 900 L/h |
| Filter Volume | 2.7 L |
| Filter Power Consumption | 5.5 W |
| Included Heater | OASE HeatUp 50 |
| Heater Setting | Approx. 79°F / 26°C |
| Dimensions | 154 × 304 × 212 mm |
| Freshwater | Yes |
| Marine | Yes |
| Colour | Grey |
The BioStyle Thermo 50 is particularly well suited to planted aquariums where visible equipment can distract from the aquascape. Integrating the heater into the filter keeps more of the display free for plants, stone, driftwood, and livestock.
Its larger filter capacity and 900 L/h maximum flow also make the Thermo 50 a strong option for aquarists who want substantial filtration without moving to a traditional canister filter.
Available in Canada at Aquascaperoom — OASE aquarium filtration, planted aquarium equipment, and professional aquascaping supplies.
