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

From the brand

How did we get our start?

Here at OASE, we’ve always had a passion for water and for aquatic environments and design that meet the highest possible standards of technical precision – ever since 1949.

Why do we love what we do?

We are designers by trade and composers at heart, both when it comes to creating fascinating water scenes in gardens and aquariums and in the field of professional fountain and water technology.

What makes our products unique?

From idea to implementation, function to fascination, technical to biological: we offer innovative smart products, premium quality and convenience.

Award-winning Products

Reviewed and evaluated by top experts, our products have won international awards for design quality.

Meet our award-winners!

Superior and Reliable Filters

Our quality aquarium filters offer multi-stage cleaning power and long service life to help support a healthy and clean ecosystem.

Meet your new aquarium filter!

Designed with you in mind.

We design our products with unique, helpful features, so you spend less time maintaining and more time enjoying your aquarium!

Product Dimensions ‏ : ‎ 9.4 x 9.4 x 14.6 inches; 15.75 Pounds
Item model number ‏ : ‎ 94691-GGP
Date First Available ‏ : ‎ April 3, 2025
Manufacturer ‏ : ‎ GeoGlobal
ASIN ‏ : ‎ B0F3M39VYQ
Best Sellers Rank: #19,670 in Pet Supplies (See Top 100 in Pet Supplies) #86 in Aquarium Filters
Customer Reviews: 4.6 4.6 out of 5 stars (78) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
OPTIMIZED FLOW & FILTRATION FOR CRYSTAL CLEAR WATER – The next generation of BioMaster has updated features for increased performance. A sealed 4-stage filtration path with multi-density foams, Hel-X Biomedia, and activated carbon delivers superior water clarity for freshwater and saltwater tanks.
THE MOST CONVENIENT CANISTER FILTER ON THE MARKET – The BioMaster’s innovative EasyClean pre-filter module can be removed separately from the rest of the filter. This makes maintenance fast and simple. It also increases filter efficiency and extends the life of main filter foams.
BUILT-IN HEATER – Integrated heater minimizes in-tank equipment, while also protecting inhabitants from direct contact. Temperature controlled via bi-metal technology with a thermal shutoff for safety.
NO-MESS MAINTENANCE – Designed with safety locks on the handle, pre-filter, and aquastop to avoid spills during maintenance. The aquastop is detachable for easy movement of the filter without affecting the tubing setup.
RELIABLE & BACKED BY WARRANTY – Made in Italy, with German engineering from OASE and backed by a 4-year warranty (3 + 1 year with online registration). Includes all the necessary fittings for your setup: curved inlet and outlet tubes, inlet strainer, water outlet nozzle, modular spray bar with flow control attachment, tubing, heater, heater adapter, and 6 ft. power cords (one cord for filter, one cord for heater).