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Description
OASE BIOMASTER EXTERNAL FILTERExternal Aquarium Filter For the Highest Demands EasyClean pre filter module Module can be removed separately from the rest of the filter. This reduces maintenance, increases filter efficiency, and extends the life of main filter foams. Customize the pre filter with coarse 30 ppi, fine 45 ppi, ultra fine 60 ppi, and activated carbon 45 ppi filter foams No mess maintenance Integrated safety locking features on the handle, pre filter, and check valve in
External Aquarium Filter - For the Highest Demands
- EasyClean pre-filter module – Module can be removed separately from the rest of the filter. This reduces maintenance, increases filter efficiency, and extends the life of main filter foams. Customize the pre-filter with coarse 30 ppi, fine 45 ppi, ultra-fine 60 ppi, and activated carbon 45 ppi filter foams
- No mess maintenance – Integrated safety locking features on the handle, pre-filter, and check valve in the inlet/outlet connection unit, ensure no accidental spillage or messy maintenance
- Sealed filtration pathways – Allows for the full benefits of all four stages of filtration through this intuitive design
- Hel-X Biomedia – An extremely large protected settlement surface (800m²/1000 liter) that allows beneficial bacteria to grow and thrive. The material is designed to stop floating as soon as it reaches a certain level of bacteria colonization.
- Carbon pre-filter foams – Activated carbon absorbs unwanted substances in aquarium water. Carbon filter foams make replacement much simpler than using common granular carbon.
- Adjustable flow control – Flow can be adjusted for the inlet and outlet in multiple locations on the filter assembly
- Easy priming – Includes simple priming for fast and easy startup and continued operation
- Quiet operation – Sound dampening design
- Heater integration capability - Easily integrate an OASE HeatUp adjustable heater into the BioMaster canister (HeatUp not included)
- What’s in the Box - Aquarium Filter, filter media, intake tube with inlet strainer, water distributor nozzle, spray bar, inlet and outlet adapters with flow control, tubing, fittings, heater adapter, and power cable
- Made in Italy, backed by German engineering
- Fresh and marine water compatible
- UL certified filter
- 3 year warranty plus 1 year warranty extension with online registration
Spec BioMaster 250
| Dimensions | 9.4 x 9.4 x 14.6 in. |
| Net Weight | 11 lbs. |
| Rated Voltage | 120V / 60 Hz |
| Power Consumption | 15W |
| Power Cord Length | 6 ft. |
| Max. Flow Rate | 250 GPH |
| Max. Head Height | 5.6 ft. |
| Connection | 5/8 in. ID |
| Tubing Length | 13 ft. |
| Filter Volume | 1.2 gallons |
| Pre-filter Volume | 1.5 gallons |
| Suitable for Max. Aquarium Volume | 70 gallons |
Spec BioMaster 350
| Dimensions | 9.4 x 9.4 x 16.7 in. |
| Net Weight | 11.9 lbs. |
| Rated Voltage | 120V / 60 Hz |
| Power Consumption | 16W |
| Power Cord Length | 6 ft. |
| Max. Flow Rate | 300 GPH |
| Max. Head Height | 5.9 ft. |
| Connection | 5/8 in. ID |
| Tubing Length | 13 ft. |
| Filter Volume | 1.5 gallons |
| Pre-filter Volume | 1.9 gallons |
| Suitable for Max. Aquarium Volume | 90 gallons |
Spec BioMaster 600
| Dimensions | 9.4 x 9.4 x 19 in. |
| Net Weight | 13 lbs. |
| Rated Voltage | 120V / 60 Hz |
| Power Consumption | 23W |
| Power Cord Length | 6 ft. |
| Max. Flow Rate | 350 GPH |
| Max. Head Height | 6.6 ft. |
| Connection | 5/8 in. ID |
| Tubing Length | 13 ft. |
| Filter Volume | 1.8 gallons |
| Pre-filter Volume | 2 gallons |
| Suitable for Max. Aquarium Volume | 160 gallons |
Spec BioMaster 850
| Dimensions | 9.4 x 9.4 x 22 in. |
| Net Weight | 12 lbs. |
| Rated Voltage | 120V / 60 Hz |
| Power Consumption of the Filter | 25 Watts |
| Power Consumption of the Heater | 400 Watts |
| Power Cord Length | 6 ft. |
| Max. Flow Rate | 400 GPH |
| Max. Head Height | 7.4 ft. |
| Connection | 5/8 in. ID |
| Tubing Length | 13 ft. |
| Filter Volume | 2.1 Gallons |
| Pre-filter Volume | 0.16 Gallons |
| Suitable for Max. Aquarium Volume | 225 Gallons |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 4
Bones
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
Smaller than I though they would be but still good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2025
★★★★★ 5
Dogs love these!
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
My dogs love these. Good price for very good product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 15, 2025
★★★★★ 2
Would not buy again
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
Would not order these again. Opening in bone is too small making it almost impossible for even a small dog to reach peanut butter inside.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026
★★★★★ 5
Perfect size
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
I like this size. I’ve gotten the larger ones in the past, but my 45 pound dogs can’t get to the center. This size works much better for them. They love them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026
★★★★★ 1
my dog says NO
Flavor Name: Peanut Butter, Size: 6.9 Ounce (Pack of 1)
My dog sniffs both ends of this bone then walks away. I see in inside of it is very hard so I decided to soak it in some hot water for awhile and see what she does with it. If it works I will update.
Update. Soaking didn't help. So that bone went in the trash.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 1, 2025