---
product_id: 719305334
title: "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"
brand: "oase"
price: "¥100288"
currency: JPY
in_stock: false
reviews_count: 13
category: "Oase"
url: https://www.desertcart.jp/products/719305334-oase-biomaster-2-thermo-250-canister-filter-for-aquariums-external
store_origin: JP
region: Japan
---

# 4-stage sealed filtration Whisper-quiet operation Built-in heater with thermal shutoff 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

**Brand:** oase
**Price:** ¥100288
**Availability:** ❌ Out of Stock

## Summary

> 💧🔥 Elevate your aquarium game with the all-in-one BioMaster 2 Thermo 250 — clarity, warmth, and quiet sophistication.

## Quick Answers

- **What is this?** 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 by oase
- **How much does it cost?** ¥100288 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/719305334-oase-biomaster-2-thermo-250-canister-filter-for-aquariums-external)

## 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

- • **Spill-Proof & Secure:** Safety locks and detachable aquastop prevent leaks and simplify filter relocation without disturbing tubing.
- • **Streamlined Maintenance:** Innovative EasyClean pre-filter module removes separately for fast, mess-free cleaning—boosting filter efficiency and lifespan.
- • **Integrated Heating Power:** Built-in bi-metal controlled heater ensures stable temperature without clutter or hot spots, protecting your aquatic life.
- • **Engineered for Reliability:** German precision meets Italian craftsmanship with a 4-year warranty and all-inclusive fittings for effortless setup.
- • **Crystal Clear Water, Always:** Advanced multi-density foams and Hel-X biomedia deliver pristine clarity for freshwater & saltwater tanks up to 70 gallons.

## Overview

The OASE BioMaster 2 Thermo 250 is a premium external canister filter designed for aquariums up to 70 gallons, combining a 4-stage sealed filtration system with a built-in heater. Its EasyClean pre-filter module simplifies maintenance while ensuring superior water clarity for both freshwater and saltwater tanks. Engineered for quiet operation and equipped with safety features like thermal shutoff and spill-proof locks, this unit offers a streamlined, reliable solution backed by a 4-year warranty and complete installation fittings.

## Description

desertcart.com: 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 : Everything Else

Review: Best canister filter out there - I picked up the OASE BioMaster 2 Thermo 250 Canister Filter for my aquarium, and overall it’s been one of the best all-in-one filtration solutions I’ve used, especially for tanks where space and simplicity matter. Right away, the built-in heater integration stands out. Instead of running a separate heater with suction cups and extra cords, this unit heats and filters in one streamlined system. It keeps the temperature stable without hot spots, and the layout looks much cleaner than having multiple devices inside the tank. For anyone who cares about aesthetics and functionality, that combination alone is a huge win. In terms of filter performance, this unit moves water efficiently and handles biological, mechanical, and chemical filtration well. The flow rate is strong without being too aggressive for most community tanks, and the water always looks clear and healthy. I’ve noticed fewer maintenance intervals compared to simpler hang-on filters — the media inside has plenty of capacity and is easy to access when it’s time for a clean. Installation was fairly straightforward. The hoses and connections are solid, and the instruction layout made sense. Once set up, the unit runs quietly and reliably — it doesn’t dominate the room with noise. things to note: The initial price is higher than a standalone filter + heater combo, but in my opinion the integration and convenience justify it. Overall, this OASE BioMaster 2 Thermo 250 feels like a top-tier choice in canister filtration with the added bonus of heating built in. It simplified my setup, performs strongly, and keeps my aquarium water looking great with less fuss — definitely one of the best options I’ve used for mid-size tanks.
Review: Best filter I’ve ever had! - Easy to setup, high quality parts, suction cups work very well, easy to clean, high water flow, I’m super happy with this purchase. Well worth the money and has a professional, streamlined look. There’s an incredible amount space for mechanical and biological filtration. I’m coming from the Fluval 301 and 401 series and this is a serious upgrade that I won’t go back from.

## 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 | B0F3M39VYQ |
| ASIN  | B0F3M39VYQ |
| Best Sellers Rank | #34,976 in Pet Supplies ( See Top 100 in Pet Supplies ) #156 in Aquarium Filters |
| Brand | OASE |
| Brand Name | OASE |
| Customer Reviews | 4.4 4.4 out of 5 stars (58) |
| Date First Available | April 3, 2025 |
| Date First Available  | April 3, 2025 |
| Item Dimensions LxWxH | 9.4 x 9.4 x 14.6 inches |
| Item Package Dimensions L x W x H | 17 x 15 x 12 inches |
| Item Weight | 15.72 pounds |
| Item model number | 94691-GGP |
| Item model number  | 94691-GGP |
| Manufacturer | GeoGlobal |
| Manufacturer  | GeoGlobal |
| Model Name | OASE BioMaster 2 Thermo 250 Canister Filter for Aquariums |
| Product Dimensions | 9.4"L x 9.4"W x 27"H |
| Product Dimensions  | 9.4 x 9.4 x 14.6 inches; 15.75 Pounds |
| Size | BioMaster 2 Thermo 250 |
| Special Feature | Heavy Duty |
| UPC | 706759946919 |

## Product Details

- **Brand:** OASE
- **Capacity:** 250 Liters
- **Item Weight:** 7.14 Kilograms
- **Manufacturer:** GeoGlobal
- **Material:** Plastic
- **Model Name:** OASE BioMaster 2 Thermo 250 Canister Filter for Aquariums
- **Product Dimensions:** 9.4"L x 9.4"W x 27"H
- **Special Feature:** Heavy Duty
- **UPC:** 706759946919

## Images

![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 - Image 1](https://m.media-amazon.com/images/I/71+tH24WftL.jpg)
![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 - Image 2](https://m.media-amazon.com/images/I/7103e7tuLnL.jpg)
![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 - Image 3](https://m.media-amazon.com/images/I/717dLzVvrxL.jpg)
![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 - Image 4](https://m.media-amazon.com/images/I/7191VnEandL.jpg)
![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 - Image 5](https://m.media-amazon.com/images/I/71EYcNthGiL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best canister filter out there
*by I***F on December 27, 2025*

I picked up the OASE BioMaster 2 Thermo 250 Canister Filter for my aquarium, and overall it’s been one of the best all-in-one filtration solutions I’ve used, especially for tanks where space and simplicity matter. Right away, the built-in heater integration stands out. Instead of running a separate heater with suction cups and extra cords, this unit heats and filters in one streamlined system. It keeps the temperature stable without hot spots, and the layout looks much cleaner than having multiple devices inside the tank. For anyone who cares about aesthetics and functionality, that combination alone is a huge win. In terms of filter performance, this unit moves water efficiently and handles biological, mechanical, and chemical filtration well. The flow rate is strong without being too aggressive for most community tanks, and the water always looks clear and healthy. I’ve noticed fewer maintenance intervals compared to simpler hang-on filters — the media inside has plenty of capacity and is easy to access when it’s time for a clean. Installation was fairly straightforward. The hoses and connections are solid, and the instruction layout made sense. Once set up, the unit runs quietly and reliably — it doesn’t dominate the room with noise. things to note: The initial price is higher than a standalone filter + heater combo, but in my opinion the integration and convenience justify it. Overall, this OASE BioMaster 2 Thermo 250 feels like a top-tier choice in canister filtration with the added bonus of heating built in. It simplified my setup, performs strongly, and keeps my aquarium water looking great with less fuss — definitely one of the best options I’ve used for mid-size tanks.

### ⭐⭐⭐⭐⭐ Best filter I’ve ever had!
*by X***N on May 25, 2025*

Easy to setup, high quality parts, suction cups work very well, easy to clean, high water flow, I’m super happy with this purchase. Well worth the money and has a professional, streamlined look. There’s an incredible amount space for mechanical and biological filtration. I’m coming from the Fluval 301 and 401 series and this is a serious upgrade that I won’t go back from.

### ⭐⭐⭐⭐⭐ Excellent filtration
*by Z***O on November 19, 2025*

This is a great filter. Clean the prefilter weekly & pack the rest with sponge you clean every 6 months. It hides the heater & keeps the tank crystal clear. Best canister in the market.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-29*