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OASE

OASE BioMaster 2 Thermo 250 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 70 Gallons

4.7
Based on 27 reviews
Independent Analysis
No paid placements

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Technical Specifications

Complete product details

Brand
OASE
Special Feature
Heavy Duty
Product Dimensions
9.4"L x 9.4"W x 27"H
Item Weight
7.14 Kilograms
Model Name
OASE BioMaster 2 Thermo 250 Canister Filter for Aquariums
UPC
706759946919
Manufacturer
GeoGlobal
Item Weight
15.72 pounds
ASIN
B0F3M39VYQ
Item model number
94691-GGP
Customer Reviews
4.7 4.7 out of 5 stars 27 ratings 4.7 out of 5 stars
Date First Available
April 3, 2025
Item Package Dimensions L x W x H
17 x 15 x 12 inches
Item Dimensions LxWxH
9.4 x 9.4 x 14.6 inches
Brand Name
OASE
Size
BioMaster 2 Thermo 250
Product Dimensions
9.4 x 9.4 x 14.6 inches; 15.75 Pounds
Best Sellers Rank
See Top 100 in Pet Supplies

Community Q&A

Questions from real customers

Customer Insights

What customers are saying

5Positive
1Mixed
0Negative

Ease of maintenance

Users love the EasyClean pre-filter, stating it makes routine cleaning quick and...

Positive

Noise level

Most customers describe the filter as very quiet, with some saying they can bare...

Positive

Built-in heater

Appreciated for saving tank space and simplifying wiring. Some mention the heate...

Positive

Media capacity

Spacious media baskets that accommodate custom media mixes. Users like the inclu...

Positive

Durability

Overall solid build. A few early adopters reported minor leaks at hose connectio...

Positive

Flow rate

Flow is adequate for 60–70 gallon tanks, but some users with heavy stocking wish...

Mixed

About This Review

Researched and written by the Review Atlas editorial team

How We Review This Product

Our independent, data-driven research process

Our Research Process

  • We analyze the full manufacturer specifications and compare them against competing products
  • We synthesize verified customer feedback to surface recurring praise and complaints
  • We track pricing and availability so recommendations reflect real value at today's prices
  • Manufacturers cannot pay for placement, scores, or favorable coverage
  • Evaluated using our Aquariums & Fish Bowls review criteria
Last updated: November 17, 2025
Independent, reader-supported research