---
product_id: 97759218
title: "BioMaster Thermo External Filter with Built-in Heater for Aquariums up to 160 gallons, Multi-stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering"
brand: "oase"
price: "¥114396"
currency: JPY
in_stock: true
reviews_count: 13
category: "Oase"
url: https://www.desertcart.jp/products/97759218-biomaster-thermo-external-filter-with-built-in-heater-for-aquariums
store_origin: JP
region: Japan
---

# 4-stage filtration for crystal-clear water Whisper-quiet operation under 350 GPH Integrated heater for precise temp control BioMaster Thermo External Filter with Built-in Heater for Aquariums up to 160 gallons, Multi-stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering

**Brand:** oase
**Price:** ¥114396
**Availability:** ✅ In Stock

## Summary

> 🔥💧 Elevate your aquarium game with the all-in-one BioMaster Thermo 600!

## Quick Answers

- **What is this?** BioMaster Thermo External Filter with Built-in Heater for Aquariums up to 160 gallons, Multi-stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering by oase
- **How much does it cost?** ¥114396 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/97759218-biomaster-thermo-external-filter-with-built-in-heater-for-aquariums)

## 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

- • **Whisper-Quiet Flow:** Silent external filter keeps your space peaceful and your fish happy
- • **Smart Water Movement:** Adjustable inlet/outlet + diffuser for optimal oxygenation and circulation
- • **Effortless Maintenance:** Removable pre-filter module for quick cleaning without disturbing beneficial bacteria
- • **Quadruple Filtration Power:** Biological, mechanical, chemical & prefiltration for ultimate water purity
- • **Seamless Aquarium Elegance:** Integrated heater + filter = clutter-free, pristine views

## Overview

The OASE BioMaster Thermo 600 is a premium external aquarium filter with a built-in heater, delivering precise temperature control and 4-stage filtration (biological, mechanical, chemical, prefiltration) in a compact, quiet design. Its removable pre-filter module simplifies maintenance while preserving beneficial bacteria, and adjustable water flow plus a diffuser optimize oxygenation. Designed for marine and freshwater tanks, it offers energy-efficient, leak-proof operation backed by a 3-year warranty plus a 1-year extension with online registration.

## Description

The OASE BioMaster Filter is a game-changer for aquarium enthusiasts, offering convenience and efficiency. Its unique EasyClean Pre-filter module allows you to quickly remove and clean it without having to disassemble the entire unit. This reduces maintenance time and boosts the filter's performance while prolonging the life of the main foams. The best part? Thanks to quicker and simple maintenance, you spend more time enjoying your beautiful aquarium! Even better, the BioMaster Thermo models come with a built-in heater that not only reduces clutter inside the tank, but it also keeps your aquatic inhabitants safe from direct contact with the heater. You can easily adjust the temperature between 66°F and 90°F and also calibrate within +/- 2°F. - ensuring the perfect environment for your fish. The BioMaster's four-stage filtration system guarantees crystal clear water, as it flows through various media, including activated carbon and OASE Hel-X Biomedia, creating an ideal habitat for beneficial bacteria. Safety is also a top priority, with secure locks and an aquastop feature that prevents spills during cleaning. Manufactured in Italy with German engineering, this filter quality is unmatched and OASE stands behind the quality of the product with a 4-year warranty (3 + 1 year when you register online). Included in the box are all the necessary accessories for your set-up, so you'll be up and running so you can enjoy your aquarium!

Review: Great aquarium filter! - This is my first external canister-type aquarium filter and I'm very happy with my purchase. Going from a 10 gallon tank with various hanging filters (Tetra, Fluval, Marineland) to a larger (50? gallon) tank with a red-eared slider was a big difference for me. Turtles are very very messy, so I knew I had to make the change when putting him into a bigger tank. I was nervous at first but now that I've had this for several months, I am comfortable with disassembly for routine cleaning. About 3 months into use, it started getting louder and louder. After ruling out air in the lines, I figured it had to be the impeller, but getting to it requires removing a housing that was impossible for me. Cleaning the impeller is part of routine maintenance so I knew it was not only possible but necessary- I just couldn't get to it. My hubby had to use the provided tool along with a little man-handling. Now that it's been removed once, I am able to to do it myself from now on, but it was just that first-time I couldn't untighten its cover. Again, I'm very happy with my purchase as it is quite easy to clean (now that my husband has loosened all the fittings) and it keeps the water super clear. It doesn't leak, is completely silent (when maintained properly), and is pretty straightforward to setup and maintain. The only criticism I have is that there's no indicator for the heater - there's no light that it's on and working, and even if there was a light you wouldn't be able to see it since it's internal. So your only indication of a burned out heater would be cold water. This hasn't happened yet but is something I think about.
Review: Best Canister Filter Ever! - I LOVE IT! I've been using two of these Thermo 250's on my freshwater 55 gal, for 3 weeks+ now. The Thermo 250 cost a lil more than most canister filters, but has 2 great features that make it worth the extra price. 1: It comes with a built in heater which is great, because that's less clutter in your aquarium. 2: It has a pre-filter on the intake that can be pulled out and cleaned separately, so you don't have to always clean the whole canister, and you can keep that good bacteria growing in the main filter trays. 3: It comes with 4 trays to add media too. 4: It's super quiet, my 60 gal rated air pump is louder then both of my 250Ts combined, and the air pump really quiet. I have not had to do any maintenance in my first month of running and the water flow is still very strong in my heavily fish stocked/planted aquarium. I have to be honest though; I'm only using the coarse circular intake filter pads that came with it, because I upgraded just about everything else. I also added jardli glass water intake and glass water outtake for that kool less clutter look. This is because I did some serious research on the net and good ol youtube. After a long search on all types of aquarium filters ie.. hang on back, canister, sponge, under gravel and sup, I came across this Thermo 250 Canister from Oase. Now just about all if not every youtube video on it was from a none english speaking country. Then I seen this random video that said "pimpmyfilter". I clicked on it and some British guy named the "pondguru" was giving a demonstration on how to make the Thermo 600 model more efficient. After watching that video I was completely hooked/sold on his way of making the Thermo Canister filter more efficient. I didn't do the drilling though, cause it doesn't seem to be needed, the water flow is still very strong. With that being said I can't give an honest opinion on how good the filter media is that came with it like the meduim and fine pads and the ceramic balls. Because, I pimped out both of my Thermo 250s from start. I am using the original black fine pads for the prefilter, because they work the best for trapping muck and not letting it through to the main filter. No matter what type of filter you get whether it's this one or another model or brand, I highly highly recommend that you go on YouTube and type "pimpmy(filter name here)filter" ie pimpmyoasethermofilter, pimpmyfluvalfilter, pimpmywhateverfilter. I promise you that that will be the most helpful thing you ever did when it comes to searching for and aquarium filter. No-one on the internet that I've seen is doing anything remotely close to what that guy does to aquarium fliters. He didn't pay me or ask me to promote his channel. He'll probably never know that I'm promoting his work. I'm just giving him mad props because he deserves it. Watch and see, and I bet you'll come back looking for this review to say that it really helped you.

## Features

- THE MOST CONVENIENT CANISTER FILTER ON THE MARKET – The BioMaster's 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 - Houses heater to minimize in-tank equipment, while also protecting inhabitants from direct contact. Temperature controlled via bi-metal technology with a thermal shutoff for safety. Adjustable between 66°F - 90°F with a secondary knob for fine-tuning within +/- 2°F.
- CLEAN, CLEAR, HEALTHY WATER – Engineered with 4-stage sealed filtration pathways, this filter ensures water travels the most efficient path through activated carbon foams, filter foams of differing pore densities, and Hel-X Biomedia – all providing ideal surface area for beneficial bacteria settlement.
- BUILT-IN SAFETY FEATURES - 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.
- QUALITY DESIGN – 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: intake tube with inlet strainer, water distributor nozzle, spray bar, inlet adapter and outlet adapter with flow control, tubing, fittings, heater adapter, and 6 ft. power cords (one cord for filter, one cord for heater).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07LHFRR93 |
| Best Sellers Rank | #131,914 in Pet Supplies ( See Top 100 in Pet Supplies ) #2,276 in Aquarium Filter Accessories |
| Brand | OASE |
| Brand Name | OASE |
| Capacity | 600 Liters |
| Customer Reviews | 4.3 out of 5 stars 788 Reviews |
| Global Trade Identification Number | 00706759551502 |
| Included Components | Aquarium Filter with heater, filter media, tubing, intake and outflow tubes, diffuser, spray bar, fittings, and power cable Included Components Aquarium Filter with heater, filter media, tubing, intake and outflow tubes, diffuser, spray bar, fittings, and power cable See more |
| Item Dimensions L x W x H | 9.4"L x 9.4"W x 9.4"H |
| Item Type Name | Filter |
| Item Weight | 13.23 Pounds |
| Manufacture Year | 2023 |
| Manufacturer | OASE |
| Material | Plastic and other materials |
| Material Type | Plastic and other materials |
| Maximum Flow Rate | 350 Gallons Per Minute |
| Model Name | 55150 |
| Model Number | 55150 |
| Other Special Features of the Product | Integrated heater |
| Part Number | 55150 |
| Power Source | Ac_dc |
| Product Dimensions | 9.4"L x 9.4"W x 9.4"H |
| Special Feature | Integrated heater |
| UPC | 706759551502 |
| Unit Count | 1.0 Count |
| Warranty Description | 3 year limited + 1 year warranty extension with online registration |

## Product Details

- **Brand:** OASE
- **Capacity:** 600 Liters
- **Power Source:** Corded Electric
- **Product Dimensions:** 9.4"W x 19"H
- **Special Feature:** Integrated heater

## Images

![BioMaster Thermo External Filter with Built-in Heater for Aquariums up to 160 gallons, Multi-stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering - Image 1](https://m.media-amazon.com/images/I/71ejyvwpmjL.jpg)
![BioMaster Thermo External Filter with Built-in Heater for Aquariums up to 160 gallons, Multi-stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering - Image 2](https://m.media-amazon.com/images/I/71us+M1wSvL.jpg)
![BioMaster Thermo External Filter with Built-in Heater for Aquariums up to 160 gallons, Multi-stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering - Image 3](https://m.media-amazon.com/images/I/71GhvYmH9yL.jpg)
![BioMaster Thermo External Filter with Built-in Heater for Aquariums up to 160 gallons, Multi-stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering - Image 4](https://m.media-amazon.com/images/I/81iV5-raLqL.jpg)
![BioMaster Thermo External Filter with Built-in Heater for Aquariums up to 160 gallons, Multi-stage Filtration, Easy Maintenance Prefilter, Quiet Canister Filter, German Engineering - Image 5](https://m.media-amazon.com/images/I/71VA0JixhvL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great aquarium filter!
*by M***B on November 21, 2025*

This is my first external canister-type aquarium filter and I'm very happy with my purchase. Going from a 10 gallon tank with various hanging filters (Tetra, Fluval, Marineland) to a larger (50? gallon) tank with a red-eared slider was a big difference for me. Turtles are very very messy, so I knew I had to make the change when putting him into a bigger tank. I was nervous at first but now that I've had this for several months, I am comfortable with disassembly for routine cleaning. About 3 months into use, it started getting louder and louder. After ruling out air in the lines, I figured it had to be the impeller, but getting to it requires removing a housing that was impossible for me. Cleaning the impeller is part of routine maintenance so I knew it was not only possible but necessary- I just couldn't get to it. My hubby had to use the provided tool along with a little man-handling. Now that it's been removed once, I am able to to do it myself from now on, but it was just that first-time I couldn't untighten its cover. Again, I'm very happy with my purchase as it is quite easy to clean (now that my husband has loosened all the fittings) and it keeps the water super clear. It doesn't leak, is completely silent (when maintained properly), and is pretty straightforward to setup and maintain. The only criticism I have is that there's no indicator for the heater - there's no light that it's on and working, and even if there was a light you wouldn't be able to see it since it's internal. So your only indication of a burned out heater would be cold water. This hasn't happened yet but is something I think about.

### ⭐⭐⭐⭐⭐ Best Canister Filter Ever!
*by S***. on January 29, 2020*

I LOVE IT! I've been using two of these Thermo 250's on my freshwater 55 gal, for 3 weeks+ now. The Thermo 250 cost a lil more than most canister filters, but has 2 great features that make it worth the extra price. 1: It comes with a built in heater which is great, because that's less clutter in your aquarium. 2: It has a pre-filter on the intake that can be pulled out and cleaned separately, so you don't have to always clean the whole canister, and you can keep that good bacteria growing in the main filter trays. 3: It comes with 4 trays to add media too. 4: It's super quiet, my 60 gal rated air pump is louder then both of my 250Ts combined, and the air pump really quiet. I have not had to do any maintenance in my first month of running and the water flow is still very strong in my heavily fish stocked/planted aquarium. I have to be honest though; I'm only using the coarse circular intake filter pads that came with it, because I upgraded just about everything else. I also added jardli glass water intake and glass water outtake for that kool less clutter look. This is because I did some serious research on the net and good ol youtube. After a long search on all types of aquarium filters ie.. hang on back, canister, sponge, under gravel and sup, I came across this Thermo 250 Canister from Oase. Now just about all if not every youtube video on it was from a none english speaking country. Then I seen this random video that said "pimpmyfilter". I clicked on it and some British guy named the "pondguru" was giving a demonstration on how to make the Thermo 600 model more efficient. After watching that video I was completely hooked/sold on his way of making the Thermo Canister filter more efficient. I didn't do the drilling though, cause it doesn't seem to be needed, the water flow is still very strong. With that being said I can't give an honest opinion on how good the filter media is that came with it like the meduim and fine pads and the ceramic balls. Because, I pimped out both of my Thermo 250s from start. I am using the original black fine pads for the prefilter, because they work the best for trapping muck and not letting it through to the main filter. No matter what type of filter you get whether it's this one or another model or brand, I highly highly recommend that you go on YouTube and type "pimpmy(filter name here)filter" ie pimpmyoasethermofilter, pimpmyfluvalfilter, pimpmywhateverfilter. I promise you that that will be the most helpful thing you ever did when it comes to searching for and aquarium filter. No-one on the internet that I've seen is doing anything remotely close to what that guy does to aquarium fliters. He didn't pay me or ask me to promote his channel. He'll probably never know that I'm promoting his work. I'm just giving him mad props because he deserves it. Watch and see, and I bet you'll come back looking for this review to say that it really helped you.

### ⭐⭐⭐⭐⭐ EXCELLENT Cannister Filter with Built-In Heating
*by J***D on February 14, 2021*

I purchased this OASE BioMaster Thermo 350 canister filter on Amazon Prime about a month ago for use with my new 32-gallon fresh water planted aquarium. This canister filter is beautifully designed and engineered in Germany, and built in Italy. This is a VERY high-quality piece of aquarium equipment with several excellent built-in features. I’ve owned aquariums for over 40 years and this is hands-down the BEST canister filter I’ve owned. The pump primer feature is powerful and effective, easy to use, and gets the filter up and operating almost immediately after applying power. The ability to shutoff and remove the 5/8” ID inlet and outlet hoses without spilling any water is an EXCELLENT FEATURE, as is the ability to remove and clean only the pre-filter. The stacking media trays are VERY easy to remove and clean, and allow the use of several different types of filter media. This unit was clearly designed by people familiar with aquarium equipment for people who use aquarium equipment! The built-in heater works great and keeps my aquarium rock-steady at the selected temperature. The pump motor is almost silent with virtually NO irritating vibration. The 5/8” ID hose supplied with the unit is tinted to hide algae and of excellent quality. I give this OASE BioMaster Thermo 350 canister filter my strongest recommendation. While not inexpensive, it works beautifully and is well worth the cost. Please see my photos.

## Frequently Bought Together

- OASE Indoor Aquatics Biomaster Thermo 600
- Seachem Matrix, 4 L / 1 gal.
- OASE Indoor Aquatics Pre-Filter Foam Set of 6 for The Biomaster 30 Ppi, Black

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-06-09*