0, "right"=>0, "bottom"=>0, "left"=>0}px solid ;">

Free shipping on orders over $100*

🇨🇦📦 Shipping to Canada unlocked!

BioMaster Filters On Sale Now ✨ Learn more

BioMasters On Sale!

This limited-time offer is the perfect opportunity to stock up. Don't miss out on these amazing discounts; your aquarium deserves the best!

Not sure which one is right for you? Compare BioMaster Models

BioMaster Product Features

Discover why the BioMaster is the ideal aquarium canister filter.

BioMaster Filter callouts

Compare BioMaster Models & Specs

Which BioMaster is right for you?

Scroll down to see BioMaster & BioMaster Thermo comparison charts.

OASE BioMaster 250
BioMaster 250
View details
OASE BioMaster 350
BioMaster 350
View details
OASE BioMaster 600
BioMaster 600
View details
OASE BioMaster 850
BioMaster 850
View details
Price
Price
$233.99
$287.99
$349.99
$416.99
Dimensions
Dimensions
9.4 x 9.4 x 14.6 inches (240 x 240 x 370 mm)
9.4 x 9.4 x 16.7 inches (240 x 240 x 425 mm)
9.4 x 9.4 x 19 inches (240 x 240 x 480 mm)
9.4 x 9.4 x 22 inches (240 x 240 x 535 mm)
Weight
Weight
11.2 lbs. (5 kg)
12.34 lbs. (5.6 kg)
13.22 lbs. (6 kg)
15.54 lbs. (7 kg)
Rated Voltage
Rated Voltage
120V / 60 Hz
120V / 60 Hz
120V / 60 Hz
120V / 60 Hz
Power Consumption
Power Consumption
15W
16W
23W
25W
Power Cord Length
Power Cord Length
6 ft. (1.8 m)
6 ft. (1.8 m)
6 ft. (1.8 m)
6 ft. (1.8 m)
Max. Flow Rate
Max. Flow Rate
250 GPH (900 LPH)
300 GPH (1100 LPH)
350 GPH (1250 LPH)
400 GPH (1500 LPH)
Max. Head Height
Max. Head Height
5.6 ft. (1.7 m)
5.9 ft. (1.8 m)
6.6 ft. (2.0 m)
7.4 ft. (2.25 m)
Connection
Connection
5/8 in. ID / 0.87 in. OD (16 mm / 22 mm)
5/8 in. ID / 0.87 in. OD (16 mm / 22 mm)
5/8 in. ID / 0.87 in. OD (16 mm / 22 mm)
5/8 in. ID / 0.87 in. OD (16 mm / 22 mm)
Tubing Length
Tubing Length
5/8 in. x 13 ft. (16 mm x 4 m)
5/8 in. x 13 ft. (16 mm x 4 m)
5/8 in. x 13 ft. (16 mm x 4 m)
5/8 in. x 13 ft. (16 mm x 4 m)
Filter Volume
Filter Volume
1.2 gallons (4.4L)
1.5 gallons (5.6L)
1.8 gallons (6.8L)
2.1 gallons (8L)
Pre-Filter Volume
Pre-Filter Volume
0.11 gallons (0.4L)
0.13 gallons (0.5L)
0.16 gallons (0.6L)
0.16 gallons (0.6L)
Suitable for Max. Aquarium Volume
Suitable for Max. Aquarium Volume
70 gallons (250L)
90 gallons (350L)
160 gallons (600L)
225 gallons (850L)
Suitable for
Suitable for
Fresh and marine water
Fresh and marine water
Fresh and marine water
Fresh and marine water
OASE BioMaster Thermo 250
BioMaster Thermo 250
View details
OASE BioMaster Thermo 350
BioMaster Thermo 350
View details
OASE BioMaster Thermo 600
BioMaster Thermo 600
View details
OASE BioMaster Thermo 850
BioMaster Thermo 850
View details
Price
Price
$276.99
$319.99
$400.99
$465.99
Dimensions
Dimensions
9.4 x 9.4 x 14.6 inches (240 x 240 x 370 mm)
9.4 x 9.4 x 16.7 inches (240 x 240 x 425 mm)
9.4 x 9.4 x 19 inches (240 x 240 x 480 mm)
9.4 x 9.4 x 22 inches (240 x 240 x 535 mm)
Weight
Weight
11.46 lbs. (5.2 kg)
12.56 lbs. (5.7 kg)
13.66 lbs. (6.2 kg)
16.75 lbs. (7.6 kg)
Rated Voltage
Rated Voltage
120V / 60 Hz
120V / 60 Hz
120V / 60 Hz
120V / 60 Hz
Power Consumption
Power Consumption
15W (filter), 150W (heater)
16W (filter), 200W (heater)
23W (filter), 300W (heater)
25W (filter), 400W (heater)
Power Cord Length
Power Cord Length
6 ft. (1.8 m)
6 ft. (1.8 m)
6 ft. (1.8 m)
6 ft. (1.8 m)
Max. Flow Rate
Max. Flow Rate
250 GPH (900 LPH)
300 GPH (1100 LPH)
350 GPH (1250 LPH)
400 GPH (1500 LPH)
Max. Head Height
Max. Head Height
5.6 ft. (1.7 m)
5.9 ft. (1.8 m)
6.6 ft. (2.0 m)
7.4 ft. (2.25 m)
Connection
Connection
5/8 in. ID / 0.87 in. OD (16 mm / 22 mm)
5/8 in. ID / 0.87 in. OD (16 mm / 22 mm)
5/8 in. ID / 0.87 in. OD (16 mm / 22 mm)
5/8 in. ID / 0.87 in. OD (16 mm / 22 mm)
Tubing Length
Tubing Length
5/8 in. x 13 ft. (16 mm x 4 m)
5/8 in. x 13 ft. (16 mm x 4 m)
5/8 in. x 13 ft. (16 mm x 4 m)
5/8 in. x 13 ft. (16 mm x 4 m)
Filter Volume
Filter Volume
1.2 gallons (4.4L)
1.5 gallons (5.6L)
1.8 gallons (6.8L)
2.1 gallons (8L)
Pre-Filter Volume
Pre-Filter Volume
0.11 gallons (0.4L)
0.13 gallons (0.5L)
0.16 gallons (0.6L)
0.16 gallons (0.6L)
Suitable for Max. Aquarium Volume
Suitable for Max. Aquarium Volume
70 gallons (250L)
90 gallons (350L)
160 gallons (600L)
225 gallons (850L)
Suitable for
Suitable for
Fresh and marine water
Fresh and marine water
Fresh and marine water
Fresh and marine water