What is the tubing diameter for bio master 350

The tubing size is 5/8 in. ID (16/22 mm)

Is it use 120 voltage ?

Yes, The OASE BioMaster 350 is rated for 120 voltage. We hope this helps.

Will the biomaster 600 be able to adequately circulate the water in my 90 gal. Freshwater tank? It will have a low fish load and planted.

Thanks for your question! The BioMaster 600 is sized for aquariums up to 160 gallons, so yes it should work for your tank. — Steve at Practical Garden Ponds, 484-237-2080

What size for a 20 gallon planted tank?

Thank you for your question! The smallest size of BioMaster filter is the BioMaster 250, which is capable of filtering aquariums up to 70 gallons, so it would be more than sufficient for your 20 gallon tank. The BioMaster 250 is available here on Amazon: https://www.amazon.com/dp/B07DFNKNBG/ — Steve at Practical Garden Ponds, 484-237-2080

Oase Indoor Aquatics Biomaster 250

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

🧬 Elevate your aquarium’s ecosystem with precision filtration that’s as smart as you are.

SILENT YET POWERFUL - Enjoy whisper-quiet water circulation that keeps your aquatic environment serene and stress-free.
BOOSTED OXYGENATION FLOW - Includes diffuser and spray bar for uniform surface movement and optimal dissolved oxygen levels.
MODULAR EASY CLEAN PREFILTER - Quickly remove and clean the prefilter separately to extend filter life and maintain peak performance.
QUADRUPLE FILTRATION MASTERY - Biological, mechanical, chemical, and prefiltration work in harmony for crystal-clear, toxin-free water.
PRECISION GERMAN ITALIAN ENGINEERING - Compact, energy-efficient design with adjustable flow and self-priming for effortless setup and maintenance.

The OASE Indoor Aquatics Biomaster 250 is a premium external aquarium filter designed for both freshwater and marine tanks. Featuring a compact, energy-efficient design with 4-stage sealed filtration—biological, mechanical, chemical, and prefiltration—it ensures superior water clarity and quality. Its innovative Hel-X biomedia maximizes beneficial bacteria growth, while the EasyClean prefilter module simplifies maintenance. Engineered in Germany and manufactured in Italy, this quiet, self-priming filter includes adjustable flow, a diffuser for enhanced oxygenation, and a 3-year warranty with an optional 1-year extension, making it a top-tier choice for discerning aquarium enthusiasts.

Specifications

ASIN	B07DFNKNBG
Best Sellers Rank	#107,385 in Pet Supplies ( See Top 100 in Pet Supplies ) #7,529 in Aquarium Accessories
Brand Name	Oase
Color	Black/Blue
Customer Reviews	4.3 4.3 out of 5 stars (148)
Global Trade Identification Number	00706759551458
Included Components	GeoGlobal Partners 40755145: BioMaster 250 External Canister Filter
Item Dimensions L x W x H	23.9L x 23.9W x 23.9H centimeters
Item Length	13 Feet
Item Type Name	GeoGlobal Partners 40755145: BioMaster 250 External Canister Filter
Item Weight	11.2 Pounds
Manufacturer	GeoGlobal Partners LLC
Manufacturer Part Number	55145
Manufacturer Warranty Description	3 year limited + 1 year warranty extension with online registration
Material Type	Plastic
Model Number	55145
Number of Items	1
Product Style	Biomaster 250
Specific Uses For Product	Aquarium for freshwater fish
UPC	706759551458
Unit Count	1 Count
Voltage	120 Volts

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