---
product_id: 722332746
title: "BioMaster 2 Thermo 850 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 225 Gallons"
brand: "oase"
price: "¥192713"
currency: JPY
in_stock: true
category: "Oase"
url: https://www.desertcart.jp/products/722332746-biomaster-2-thermo-850-canister-filter-for-aquariums-external-aquarium
store_origin: JP
region: Japan
---

# 850 L/hr max flow Ultra-quiet operation Built-in heater w/ thermal shutoff BioMaster 2 Thermo 850 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 225 Gallons

**Brand:** oase
**Price:** ¥192713
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your aquarium game with the BioMaster 2 — clarity, convenience, and calm in one sleek filter!

## Quick Answers

- **What is this?** BioMaster 2 Thermo 850 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 225 Gallons by oase
- **How much does it cost?** ¥192713 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/722332746-biomaster-2-thermo-850-canister-filter-for-aquariums-external-aquarium)

## Best For

- oase enthusiasts

## Why This Product

- Trusted oase brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Maintenance:** Innovative EasyClean pre-filter module removes separately—no mess, no stress
- • **Whisper-Quiet Performance:** German-engineered impeller & vibration-dampening feet keep noise to a minimum
- • **Crystal-Clear Water, Guaranteed:** 4-stage sealed filtration with Hel-X Biomedia & activated carbon for pristine tanks
- • **Integrated Heating, Zero Clutter:** Built-in heater with bi-metal temperature control protects aquatic life safely
- • **Built to Last & Backed by Warranty:** Italian craftsmanship meets 4-year warranty for peace of mind

## Overview

The OASE BioMaster 2 Thermo 850 is a premium external canister filter designed for freshwater and saltwater aquariums up to 225 gallons. Featuring a sealed 4-stage filtration system with multi-density foams, Hel-X Biomedia, and activated carbon, it ensures superior water clarity. Its built-in heater with thermal shutoff minimizes in-tank equipment and protects aquatic life. The EasyClean pre-filter module allows quick, spill-free maintenance, while German engineering guarantees ultra-quiet operation. Made in Italy and backed by a 4-year warranty, this filter combines advanced technology with user-friendly design for a flawless aquarium experience.

## Description

The OASE BioMaster 2 850 is the next generation of our best-selling BioMaster filter—reimagined with updated features, making it our most efficient and user-friendly filter yet. The OASE BioMaster 2 delivers advanced, quiet, and user-friendly external filtration for freshwater or saltwater aquariums. With curved inlet/outlet tubes and adjustable flow control, it offers optimized circulation and performance over earlier models. Its EasyClean pre-filter module removes separately, reducing mess and extending the life of your main filter foams. Priming is simple, and the detachable aquastop allows for easy maintenance without disturbing tubing. The BioMaster 2 uses a 4-stage sealed filtration path that includes fine and coarse foams, activated carbon, and Hel-X Biomedia for superior mechanical, biological, and chemical filtration. Though it doesn’t include a built-in heater, it’s designed to easily integrate the OASE HeatUp heater—reducing in-tank equipment and protecting aquatic life from direct heat exposure. High-quality materials, robust impeller, enhanced ventilation, and rubber feet that dampen vibration, all allow the filter to run quietly. Safety locks and spill-free design make it easy and clean to maintain. Ideal for aquariums up to 225 gallons, the BioMaster 2 is Italian-made, German-engineered, UL certified, and backed by a 4-year warranty (3 + 1 with registration).

## Features

- 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).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0F3LV4ZZ5 |
| ASIN  | B0F3LV4ZZ5 |
| Best Sellers Rank | #15,939 in Pet Supplies ( See Top 100 in Pet Supplies ) #64 in Aquarium Filters |
| Brand Name | OASE |
| Capacity | 850 liters |
| Customer Reviews | 4.3 4.3 out of 5 stars (17) |
| Date First Available  | April 3, 2025 |
| Department  | All Ages |
| Global Trade Identification Number | 00706759946773 |
| Installation Type | Freestanding |
| Item Dimensions L x W x H | 9.4"L x 9.4"W x 22"H |
| Item model number  | Thermo 850 |
| Manufacturer | GeoGlobal |
| Manufacturer  | GeoGlobal |
| Material Type | Plastic |
| Maximum Flow Rate | 850 liters per hour |
| Model Name | BioMaster 2 Thermo 850 |
| Model Number | Thermo 850 |
| Number of Items | 1 |
| Other Special Features of the Product | Heavy Duty |
| Part Number | Thermo 850 |
| Product Dimensions  | 9.4 x 9.4 x 22 inches; 19.45 pounds |
| Purification Method | Mechanical, Chemical, Biological |
| Supported Water TDS Level Maximum (PPM) | 200 |
| UPC | 706759946773 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 93 °F |

## Product Details

- **Brand:** OASE
- **Capacity:** 850 liters
- **Installation Type:** Freestanding
- **Material:** Plastic
- **Maximum Flow Rate:** 850 liters per hour
- **Model Name:** BioMaster 2 Thermo 850
- **Product Dimensions:** 9.4"L x 9.4"W x 22"H
- **Purification Method:** Mechanical, Chemical, Biological
- **Special Feature:** Heavy Duty
- **Upper Temperature Rating:** 93 °F

## Images

![BioMaster 2 Thermo 850 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 225 Gallons - Image 1](https://m.media-amazon.com/images/I/61RXR4xX0mL.jpg)

## Available Options

This product comes in different **Size** options.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-29*