---
product_id: 726184751
title: "BioMaster 2 Thermo 350 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 90 Gallons"
brand: "oase"
price: "€ 700.14"
currency: EUR
in_stock: true
reviews_count: 13
category: "Oase"
url: https://www.desertcart.nl/products/726184751-biomaster-2-thermo-350-canister-filter-for-aquariums-external-aquarium
store_origin: NL
region: Netherlands
---

# 90 GPM max flow rate Whisper-quiet operation Built-in heater with thermal shutoff BioMaster 2 Thermo 350 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 90 Gallons

**Brand:** oase
**Price:** € 700.14
**Availability:** ✅ In Stock

## Summary

> 💧 Heat, filter, and flow — the all-in-one aquarium upgrade you didn’t know you needed!

## Quick Answers

- **What is this?** BioMaster 2 Thermo 350 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 90 Gallons by oase
- **How much does it cost?** € 700.14 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/726184751-biomaster-2-thermo-350-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

- • **Integrated Heating Power:** Built-in bi-metal controlled heater keeps your aquatic environment perfectly stable without clutter or hot spots.
- • **Spill-Proof Safety Locks:** Secure handles, pre-filter, and aquastop prevent leaks during maintenance—no more aquarium messes.
- • **Engineered for Reliability:** German precision meets Italian craftsmanship with a 4-year warranty and all-in-one fittings for seamless setup.
- • **Crystal-Clear Water, Always:** 4-stage sealed filtration with Hel-X Biomedia & activated carbon ensures pristine freshwater & saltwater clarity.
- • **Maintenance Made Effortless:** Innovative EasyClean pre-filter module removes separately for quick, mess-free upkeep and longer filter life.

## Overview

The OASE BioMaster 2 Thermo 350 is a premium external canister filter designed for aquariums up to 90 gallons. It combines a powerful 4-stage filtration system with a built-in heater controlled by bi-metal technology, ensuring crystal-clear water and stable temperatures without in-tank clutter. Featuring an EasyClean pre-filter for hassle-free maintenance, quiet operation, and spill-proof safety locks, this German-engineered, Italian-made unit offers reliable performance backed by a 4-year warranty. Ideal for both freshwater and saltwater tanks, it streamlines your aquarium setup with all necessary fittings included.

## Description

desertcart.com : OASE BioMaster 2 Thermo 350 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 90 Gallons : Pet Supplies

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: Great purchase! - So far I am really liking liking the filter. Easy to setup - I watched a few videos on the YouTube to make sure I did everything correctly. Nice and quiet and seems very user-friendly for maintenance. Had to wait a few extra weeks for delivery, perhaps because of the tariff wars, not really sure why. Very happy with this purchase. The tank looks great!

## 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 | B0F3LRD8KK |
| ASIN  | B0F3LRD8KK |
| Best Sellers Rank | #16,816 in Pet Supplies ( See Top 100 in Pet Supplies ) #65 in Aquarium Filters |
| Brand | OASE |
| Brand Name | OASE |
| Customer Reviews | 4.5 4.5 out of 5 stars (69) |
| Date First Available | April 3, 2025 |
| Date First Available  | April 3, 2025 |
| Department | All Ages |
| Department  | All Ages |
| Global Trade Identification Number | 00706759946865 |
| Installation Type | Freestanding |
| Item Dimensions LxWxH | 9.4 x 9.4 x 16.7 inches |
| Item Package Dimensions L x W x H | 18.9 x 14.87 x 12 inches |
| Item Weight | 17.11 pounds |
| Item model number | BioMaster 2 Thermo 350 |
| Item model number  | BioMaster 2 Thermo 350 |
| Manufacturer | GeoGlobal |
| Manufacturer  | GeoGlobal |
| Maximum Flow Rate | 90 Gallons Per Minute |
| Model Name | BioMaster 2 |
| Power Source | Corded Electric |
| Product Dimensions | 9.4"L x 9.4"W x 16.7"H |
| Product Dimensions  | 9.4 x 9.4 x 16.7 inches; 17.15 Pounds |
| Size | BioMaster 2 Thermo 350 |
| Special Feature | Heavy Duty |
| Supported Water TDS Level Maximum (PPM) | 300 |
| Target Audience Keyword | fish |
| UPC | 706759946865 |

## Product Details

- **Brand:** OASE
- **Capacity:** 350 Liters
- **Included Components:** EasyClean pre-filter, HeatUp heater, Main filter foams, Inlet Hose, Outlet Hose
- **Installation Type:** Freestanding
- **Item Weight:** 7.78 Kilograms
- **Material:** Plastic
- **Power Source:** Corded Electric
- **Product Dimensions:** 9.4"L x 9.4"W x 16.7"H
- **Purification Method:** Mechanical, Chemical, Biological
- **Special Feature:** Heavy Duty

## Images

![BioMaster 2 Thermo 350 Canister Filter for Aquariums – External Aquarium Filter with Built-in Heater – EasyClean Pre-Filter, Quiet Operation – Freshwater & Saltwater, Up to 90 Gallons - Image 1](https://m.media-amazon.com/images/I/61LNd9RHpNL.jpg)

## Available Options

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

## 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.

### ⭐⭐⭐⭐⭐ Great purchase!
*by C***D on February 11, 2026*

So far I am really liking liking the filter. Easy to setup - I watched a few videos on the YouTube to make sure I did everything correctly. Nice and quiet and seems very user-friendly for maintenance. Had to wait a few extra weeks for delivery, perhaps because of the tariff wars, not really sure why. Very happy with this purchase. The tank looks great!

### ⭐⭐⭐⭐⭐ Great filter.
*by A***R on February 7, 2026*

Love the prefilter on this design. The dock for the in and outflow was a little sticky, but they called that out in the packaging and included a QR code on a video to help with it. The filter is easy to use and service and tightly made. The free bar outflow and inflow and sponge media were never in the cards for me, since I prefer glass lily pipes and other filter media, but it has everything needed to make it work out of the box.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-25*