Oase BioMaster Thermo 2 External Aquarium Filter

Upgrade your aquarium filtration with the Oase BioMaster Thermo 2 External Aquarium Filter, a powerful external canister filter designed to combine efficient mechanical and biological filtration with integrated aquarium heating.

The BioMaster Thermo 2 is an excellent choice for aquarists who want powerful filtration while keeping equipment and the aquarium heater outside the display tank. Its integrated heating system helps create a cleaner, more streamlined aquarium setup, while the advanced filter design provides effective water filtration for freshwater and compatible marine aquarium applications.

Powerful External Filtration with Integrated Heating

The Oase BioMaster Thermo 2 combines filtration and heating in one convenient external unit. This makes it particularly useful for planted aquariums, community tanks and aquascapes where maintaining a clean display and reducing equipment inside the aquarium are important.

Water passes through the pre-filter before entering the main filtration area, helping capture larger debris and extending the service life of the biological filter media. OASE’s BioMaster² system also uses Hel-X biological filtration media together with mechanical-biological filter sponges to support effective aquarium filtration.

Key Features

• External canister aquarium filter with integrated heater
• Effective mechanical and biological filtration
• EasyClean pre-filter chamber for convenient maintenance
• Hel-X biological filtration technology
• Practical priming/venting button for easier startup
• Safety valve and shut-off mechanism to help prevent unwanted water leakage
• Quiet and energy-efficient operation
• Suitable for compatible freshwater and saltwater aquarium setups
• Available in multiple sizes for different aquarium volumes

EasyClean Pre-Filter for Easier Maintenance

One of the standout features of the Oase BioMaster Thermo 2 is its EasyClean pre-filter chamber.

The pre-filter captures coarse debris before it reaches the main filter media. When maintenance is required, the pre-filter can be accessed separately, helping reduce the need to completely open and clean the entire canister filter as frequently. OASE specifically designed the system to make filter cleaning more convenient.

Integrated Aquarium Heater

The Thermo version combines the external filter with an integrated adjustable heater, helping keep the aquarium heater outside the main display.

This can provide a cleaner aquascape with fewer visible pieces of equipment inside the aquarium. Heater power varies by BioMaster Thermo model, so select the appropriate size for your aquarium and check the specifications for your chosen variant. For example, OASE lists the Thermo 250 with a 150 W heater and the Thermo 350 with a 200 W heater.

Efficient Mechanical and Biological Filtration

The BioMaster Thermo 2 combines filter sponges with biological filter media to provide multiple stages of filtration.

Mechanical filtration helps capture suspended particles and debris, while biological media provides a surface for beneficial microorganisms that form an important part of aquarium biological filtration.

The pre-filter is positioned before the main filtration section, helping protect the biological media from larger debris and contributing to longer service intervals.

Choose the Right BioMaster Thermo 2 Size

OASE offers BioMaster Thermo 2 models for different aquarium sizes.

Model	Suitable Aquarium Volume	Maximum Flow Rate
BioMaster Thermo 250	Up to 250 L	900 L/h
BioMaster Thermo 350	Up to 350 L	1,100 L/h
BioMaster Thermo 600	Up to 600 L	1,250 L/h
BioMaster Thermo 850	Up to 850 L	Model dependent

Actual flow through an installed aquarium system can vary depending on hose length, filter media, head height and other setup conditions. Always select your filter according to your aquarium requirements and the manufacturer’s specifications.

Quiet External Aquarium Filtration

The BioMaster² is designed for quiet operation while providing strong filtration performance. OASE describes the system as economical and quiet, making it suitable for aquarium setups where minimizing equipment noise is important.

Its external design also keeps the main filtration equipment underneath or beside the aquarium rather than taking up valuable space inside the display.

Oase BioMaster Thermo 2 for Planted Aquariums

The Oase BioMaster Thermo 2 is especially well suited to aquascapes and planted aquariums where a clean, uncluttered appearance is important.

With filtration and heating handled externally, you can reduce the amount of equipment visible inside the aquarium while maintaining effective water circulation and filtration.

Installation and Maintenance

Before installing the filter, read the manufacturer’s instructions and confirm that the selected model is appropriate for your aquarium.

For routine maintenance:

1. Turn off the filter and disconnect it from the power supply.
2. Close the appropriate shut-off valves.
3. Remove and clean the EasyClean pre-filter as required.
4. Inspect the filter sponges and biological media.
5. Reassemble the filter and check all connections.
6. Reconnect the filter and prime the system using the venting/priming button.
7. Check carefully for leaks before leaving the filter running unattended.

The BioMaster² incorporates a shut-off mechanism and safety valve designed to make disconnecting the filter from the water circuit easier and help prevent unintended water leakage.

Oase BioMaster Thermo 2 Canada

Looking for an Oase BioMaster Thermo 2 in Canada? Canadian Aquarist offers premium aquarium filtration equipment for aquarists and aquascapers across Canada.

The BioMaster Thermo 2 is a strong choice if you’re looking for an external aquarium filter with an integrated heater, convenient pre-filter maintenance and advanced biological filtration.

Choose the BioMaster Thermo 2 model that matches your aquarium size and filtration requirements.

Frequently Asked Questions

What is the Oase BioMaster Thermo 2?

The Oase BioMaster Thermo 2 is an external canister aquarium filter that combines mechanical and biological filtration with an integrated adjustable heater.

Does the Oase BioMaster Thermo 2 have a built-in heater?

Yes. The Thermo models include an integrated heater. Heater wattage depends on the specific filter size.

What aquarium sizes can the BioMaster Thermo 2 handle?

The BioMaster² range includes models designed for aquariums from smaller setups up to approximately 850 litres, depending on the model.

Is the BioMaster Thermo 2 suitable for planted aquariums?

Yes. Its external design and integrated heater make it a practical option for planted aquariums and aquascapes where keeping equipment out of the display is desirable.

Is the Oase BioMaster Thermo 2 suitable for saltwater?

OASE lists the BioMaster Thermo models as suitable for freshwater and saltwater applications. Always verify the compatibility of the specific model and all associated equipment before use in a marine system.

Is the BioMaster Thermo 2 difficult to clean?

The EasyClean pre-filter chamber is designed to make routine pre-filter maintenance easier by allowing the pre-filter section to be accessed separately from the main filter media.

Where can I buy an Oase BioMaster Thermo 2 in Canada?

You can order the Oase BioMaster Thermo 2 External Aquarium Filter from Canadian Aquarist for delivery within Canada.