---
product_id: 39357809
title: "Fluval M 100-Watt Submersible Aquarium Heater – Compact, High-Performance, Reliable Heating For Fresh & Saltwater Tanks"
brand: "fluval"
price: "₱4682"
currency: PHP
in_stock: true
reviews_count: 11
category: "Fluval"
url: https://www.desertcart.ph/products/39357809-fluval-m-100-watt-submersible-aquarium-heater-compact-high-performance
store_origin: PH
region: Philippines
---

# Compact slim design 100W powerful heating Mirror finish blends in Fluval M 100-Watt Submersible Aquarium Heater – Compact, High-Performance, Reliable Heating For Fresh & Saltwater Tanks

**Brand:** fluval
**Price:** ₱4682
**Availability:** ✅ In Stock

## Summary

> 🔥 Seamless heat, sleek style — your fish’s new best friend!

## Quick Answers

- **What is this?** Fluval M 100-Watt Submersible Aquarium Heater – Compact, High-Performance, Reliable Heating For Fresh & Saltwater Tanks by fluval
- **How much does it cost?** ₱4682 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/39357809-fluval-m-100-watt-submersible-aquarium-heater-compact-high-performance)

## Best For

- fluval enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted with shock-resistant borosilicate glass and premium European components for unmatched durability.
- • **Invisible Elegance:** Unique reflective coating camouflages heater, preserving your aquarium’s natural beauty without distraction.
- • **Precision Heat Control:** Maintains stable temps for tanks up to 30 gallons, ensuring your aquatic ecosystem thrives.
- • **Universal Compatibility:** Perfectly engineered for both freshwater and saltwater tanks, supporting diverse aquatic life.
- • **Space-Savvy Slim Profile:** Sleek, compact design fits discreetly, maximizing tank space and minimizing clutter.

## Overview

The Fluval M 100-Watt Submersible Aquarium Heater delivers reliable, precise temperature control for aquariums up to 30 gallons. Featuring a mirror-like reflective finish, it blends invisibly into your tank environment. Its compact, slim design allows easy, discreet placement while durable borosilicate glass and premium European components ensure long-lasting performance. Suitable for both freshwater and saltwater setups, this heater guarantees a stable, healthy habitat for your aquatic pets with a 3-year warranty backing its quality.

## Description

Fluval M100 Premium Aquarium Heater is quality manufactured in Europe using superior components and construction. Sleek and compact, the submersible heater provides exceptional performance and unsurpassed reliability.

Review: Great product!!! - I love this heater. I have been using it in my betta's tank for about a year, and so far, it has worked very well! This heater is not made for being completely submerged under water. The black and grey part (the part above the little wavy marks) must be above water, along with the cord. I put this heater right next to my filter so that the filter motor can move the warmed water around the aquarium evenly. This heater is, of course, automatic. It has a thermostat somewhere in it that tells it to turn on when the water is too cool and turn off when the water gets warm enough. When the heater is warming your tank water, there will be a blue light on the side, and when it turns on and off, it will make a clicking sound and the light will turn on or off. This is a very good heater for my five-gallon tank. I have it set at about 81 degrees, and it keeps my tank at a steady 78 or 79 degrees Fahrenheit (which is the perfect temperature for betta fish). I am very impressed!
Review: The only heater that reliably works for my 10‑gallon tank - After trying several different aquarium heaters, this Fluval M 150‑watt model is the only one that has consistently kept my 10‑gallon tank at the correct temperature. It heats evenly, stays stable, and doesn’t fluctuate the way other brands did. For a small tank that needs dependable temperature control, this has been the most reliable option I’ve used. For ambient air context, it's winter and the house dips to 60 degrees at night. I have a cover on the tank which is essential.

## Features

- Powerful & Reliable Heating: The Fluval M 100 Watt Submersible Heater ensures consistent and precise temperature control for aquariums up to 30 gallons. Built with superior European components, this heater delivers exceptional reliability and performance
- Mirror Technology: Designed with a unique reflective finish, the aquarium heater seamlessly blends into your tank by mirroring its surroundings. Innovative feature enhances the aquarium’s aesthetics while maintaining an unobtrusive appearance
- Compact & Sleek Design: The Fluval M Series heater boasts a slim profile, making it easy to position discreetly within your aquarium. Its compact size ensures it doesn’t take up unnecessary space, allowing for an uncluttered tank environment
- Versatile for All Aquariums: Ideal for both freshwater and saltwater tanks, the Fluval M 100 Watt heater provides stable and uniform heating to create a comfortable and healthy aquatic habitat for your fish and plants
- European Quality: Engineered with high-quality materials & advanced construction techniques, aquarium heater is designed for durability & long-lasting performance. Trust Fluval’s expertise in aquatic products for a safe and efficient heating solution

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0027VONIU |
| ASIN  | B0027VONIU |
| Age Range Description | All ages |
| Best Sellers Rank | #5,937 in Pet Supplies ( See Top 100 in Pet Supplies ) #16 in Aquarium Heaters |
| Brand Name | Fluval |
| Breed Recommendation | All Breed Sizes |
| Color | None Specific |
| Customer Reviews | 4.4 4.4 out of 5 stars (5,482) |
| Date First Available | August 19, 2004 |
| Date First Available  | August 19, 2004 |
| Directions | Built in reflective technology mirrors the surrounding colors, making the heater blend into your aquarium environment Shock resistant Borosilicate glass; High density ceramic heat sick Slim profile tube for easy placement; Easy to install Exceptional performance and unsurpassed reliability Suitable for aquariums up to 30 gallons; 100 watts; 3 year warranty |
| Included Components | Fluval M Submersible Heater |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 4.8 x 1.8 x 14.8 inches |
| Item Package Dimensions L x W x H | 14.76 x 4.76 x 1.77 inches |
| Item Weight | 0.62 Pounds |
| Item model number | A782 |
| Item model number  | A782 |
| Manufacturer | Rolf C. Hagen (USA) Corp. |
| Manufacturer  | Rolf C. Hagen (USA) Corp. |
| Material | Borosilicate Glass |
| Model Name | A782 |
| Number of Items | 1 |
| Product Dimensions  | 4.8 x 1.8 x 14.8 inches; 9.86 ounces |
| Size | M100 |
| Specific Uses for Product | Indoor |
| Style | M100 |
| Target Audience Keyword | algae-eaters, betta-fish, bottom-feeder-fish, cichlid-fish, fish, goldfish, invertebrate-fish, mollusks, octopuses, rays, sharks, snails |
| Warranty Description | 3 years; The Fluval M series Submersible Aquarium Heater is guaranteed for defective parts and workmanship for a period of 3 year. We reserve the right to repair or replace, at our option. This guarantee excludes damage, breakage of the glass tube or injuries resulting from negligence or other misuse. This warranty does not include responsibility for animate or inanimate matter contained in the aq… |

## Product Details

- **Brand:** Fluval
- **Color:** None Specific
- **Global Trade Identification Number:** 00015561107822
- **Included Components:** Fluval M Submersible Heater
- **Item Weight:** 0.62 Pounds
- **Material:** Borosilicate Glass
- **Product Dimensions:** 4.8"L x 1.8"W x 14.8"H
- **Specific Uses For Product:** Indoor
- **Style:** M100
- **UPC:** 015561107822

## Images

![Fluval M 100-Watt Submersible Aquarium Heater – Compact, High-Performance, Reliable Heating For Fresh & Saltwater Tanks - Image 1](https://m.media-amazon.com/images/I/61NiBdOzOFL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product!!!
*by O***M on November 7, 2025*

I love this heater. I have been using it in my betta's tank for about a year, and so far, it has worked very well! This heater is not made for being completely submerged under water. The black and grey part (the part above the little wavy marks) must be above water, along with the cord. I put this heater right next to my filter so that the filter motor can move the warmed water around the aquarium evenly. This heater is, of course, automatic. It has a thermostat somewhere in it that tells it to turn on when the water is too cool and turn off when the water gets warm enough. When the heater is warming your tank water, there will be a blue light on the side, and when it turns on and off, it will make a clicking sound and the light will turn on or off. This is a very good heater for my five-gallon tank. I have it set at about 81 degrees, and it keeps my tank at a steady 78 or 79 degrees Fahrenheit (which is the perfect temperature for betta fish). I am very impressed!

### ⭐⭐⭐⭐⭐ The only heater that reliably works for my 10‑gallon tank
*by T***S on January 18, 2026*

After trying several different aquarium heaters, this Fluval M 150‑watt model is the only one that has consistently kept my 10‑gallon tank at the correct temperature. It heats evenly, stays stable, and doesn’t fluctuate the way other brands did. For a small tank that needs dependable temperature control, this has been the most reliable option I’ve used. For ambient air context, it's winter and the house dips to 60 degrees at night. I have a cover on the tank which is essential.

### ⭐⭐⭐⭐⭐ Reliable and Low-Key (in the Best Way)
*by M***L on July 25, 2025*

This Fluval heater is a solid piece of equipment. I’ve had it running for almost 2 years now and it’s still performing like a champ — keeps the water at just the right temp without any fuss. The borosilicate glass design is a nice touch — it blends into the tank much better than those bulky, obvious heaters. You can still see it, but it’s not screaming for attention. The temperature dial is easy to use and overall it feels well-built and dependable. If you’re looking for a heater that just works and doesn’t make your tank look like a science experiment, this is a great pick. Its a good size, nice and slim and definitely worth every penny.

## Frequently Bought Together

- Fluval M 100-Watt Submersible Heater
- PAIZOO Fish Tank Digital Thermometer Accurate LED Display to ±0.9°F Tank Thermometer Aquarium Temperature Measurement Suitable for Fish, Axolotl, Turtle or Aquatic
- API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-01-31*