---
product_id: 7880695
title: "Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W"
brand: "cobalt aquatics"
price: "₨267"
currency: SCR
in_stock: true
reviews_count: 7
url: https://www.desertcart.sc/products/7880695-cobalt-aquatics-flat-neo-therm-heater-with-adjustable-thermostat-fully
store_origin: SC
region: Seychelles
---

# 100% fully submersible ±0.5°F precision thermostat shatterproof resin casing Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W

**Brand:** cobalt aquatics
**Price:** ₨267
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate your aquarium’s vibe with precision heating that’s as sleek as your workspace!

## Quick Answers

- **What is this?** Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W by cobalt aquatics
- **How much does it cost?** ₨267 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/7880695-cobalt-aquatics-flat-neo-therm-heater-with-adjustable-thermostat-fully)

## Best For

- cobalt aquatics enthusiasts

## Why This Product

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

## Key Features

- • **Real-Time LED Display:** Simultaneously shows set and actual temperatures, keeping you effortlessly informed at a glance.
- • **Durable & Reliable Build:** Shatterproof resin housing ensures long-lasting performance, backed by a 3-year warranty.
- • **Ultimate Safety Assurance:** Integrated thermal protection auto-shuts heater to prevent overheating and protect your aquatic life.
- • **Sleek, Space-Saving Design:** Super-flat profile fits discreetly in any tank, perfect for modern minimalist setups.
- • **Precision Temperature Control:** One-touch adjustable thermostat maintains tank temp within ±0.5°F for optimal aquatic comfort.

## Overview

The Cobalt Aquatics Flat Neo-Therm Heater is a fully submersible, shatterproof aquarium heater featuring a super-flat design and an adjustable electronic thermostat with ±0.5°F accuracy. It offers advanced safety with automatic shutoff to prevent overheating, a reversible mounting bracket for versatile placement, and a clear LED display showing both set and actual temperatures. Engineered for durability and efficiency, it’s ideal for tanks up to 20 gallons (75W model) and backed by a 3-year warranty, making it a trusted choice for professional aquatic enthusiasts.

## Description

desertcart.com : Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W : Aquarium Heaters : Pet Supplies

Review: Works great - I was looking for a heater for my new 2.6 gallon tank but every heater I found either had horrible reviews or weren't adjustable and people said with such a small tank it would cook my fish. When I stumbled upon this heater I was impressed with all of the glowing reviews and everyone saying it not only maintains the water temperature by it actually heats the water. A lot of reviews for other heaters said the heaters only maintained temperature, it didn't raise the temperature. I couldn't ignore all of these reviews, obviously this heater does something right so I ordered one. I just got this heater today and so far it seems to be working perfectly, a little too perfectly as it seems to be warming the water 2 degrees higher than what I set it at (this is confirmed not only with a separate thermometer but also by the heater itself) but this is no big deal, I just set the heater 2 degrees colder than I want. The heater is very slim and not too long, it fits perfectly even in a fairly small tank like mine. I didn't realize when I ordered it that it also acts as a thermometer but the way it's situated in my tank makes it really cumbersome to use it for that purpose (which is no fault of the product itself) so I still rely on a standalone thermometer for that purpose. Both the standalone thermometer and this heater show the same temperature so I'd say this is fairly accurate as well. The only complaint I have is something another reviewer mentioned; the suction cups don't work at all. I push the heater where the suction cups are against the side of the tank and they'll stick but then I'll check the heater a few minutes later and the suction cups have failed. I have no idea if the suction cups just aren't very good or if they're not meant to work on the type of surface I am sticking them to, it's like frosted glass or acrylic, not sure on that. However this isn't a big deal for me personally because the heater itself is situated in a small chamber so it doesn't really move much anyways but if it wasn't I would be worried that the heater might float on its side towards the top of the tank which the instructions say is bad. Overall I am very satisfied with the product and would highly recommend it. Sure it's a bit pricey but then again you get what you pay for. Instead of buying a sub par 10 dollar heater that won't work very well put another 20 dollars towards your purchase and buy this high quality heater.
Review: A Heater for the 21st Century - I've purchased a good number of aquarium heaters over the years and they were all variations of the same function and design, and has virtually remained unchanged for over five decades--a long tube, glass or plastic housing, with heating elements, which were then connected to some sort of thermostat circuitry. My last one, an Aqueon unit, malfunctioned and almost wiped out my whole tank's population because it overheated the aquarium and did not have a safety defeat mechanism. I lost 3 neon tetras, and two nerite snails in this incident and swore, (not verbally), that I would never use tube-type heaters again. Enter the Neo-Therm heater. I was struck by the new, sleek look; very modern and high tech. It wasn't a tube form factor, but was flat, which seems to provide more surface area to be in contact with the water. The LED readout is a great way to check on the water's temperature at a glance, and tells you whether you're up or down in the desired temperature you preset for the unit. One solid LED means your set temp and tank temp are the same. A flashing light before or after your set temp means it is higher or lower. To adjust the temp, you press a button located at the top of the heater, which is a bit difficult to push because it is small, and a bit slippery. But no biggie. Unlike tube type heaters, the numbers on the LED dial actually mean something, whereas, tube style heater numbers don't even correlate to the real temperatures at all, in most cases. All they do is act as a reference point for setting the temperature and this can be extremely inaccurate. I purchased the Neo-Therm and had it up and running in no time at all, not counting the recommended 15-minutes (or more) for the heater to calibrate itself when you first put it into your tank. After this I plugged it in and watched the LED dial display the water temperature. It already has a factory default temperature setting for 78 degrees F., so this makes it very easy to set up. This heater is solid-state, and according to the manufacturer, in the unlikely event that the unit fails, it will simply turn off, and not continue to heat the water. This feature alone makes the purchase worthwhile for me. The accuracy of the Neo-Therm is spot on as I verified the +/- 0.5 Fahrenheit degree accuracy of the unit with a digital thermometer. I was very impressed. The Neo-Therm is sturdy and the outer casing is made from shatter resistant plastic and should hold up for a very long time to bumps and bruises. There were a few issues though. The first unit I ordered was inaccurate to about 1-2 degrees and persisted in this false reading over two week's time. I return this unit, received a new one via desertcart's outstanding customer service, and the replacement unit is flawless. The second one is subjective and doesn't affect the Neo-Therm's functionality, but may be an issue for some. The temperature display numbers, which circle the LED readout from 66 to 96 degrees, are set in multiples of two, or in other words, all even numbers. So if your tank temperature is really 79 degrees F., the display will still show it as either 78 or 80, depending if it decides to round off up or down. So for OCD types, this may be a deal breaker. I've seen the Neo-Therm flash two numbers simultaneously, and perhaps this is the way it tries to show you the in-between numbers, but I only saw this happen once, and it happened with the unit that I returned, so it was probably a fluke. Maybe in the next software update, this could actually be a feature to show the "tweener" numbers. But outside of these two issues, I am very happy with the purchase. Yes, it is more expensive than other aquarium heaters, but if you total the cost of all the heaters you've bought over the years, and have failed or become inaccurate, this makes the Neo-Therm a bargain when you compare the price differentials and performance.

## Features

- Super-flat design. Fully submersible, modern design for energy efficient Aquarium and terrarium heating. Includes reversible holster/bracket, which allows heater to face inward or outward. See the product images to determine the best neo-therm size for your tank.
- Accurate, one-touch system. Simply set temperature between 66-96°f with one touch and the neo-therm electronic thermostat will maintain Tank temperature within +0.5°F. Led displays both set temp and actual temp, simultaneously.
- Ultimate safety and reliability. Integrated thermal protection circuitry prevents heater from overheating. If you forget to turn it off, the neo-therm will automatically shut it down.
- Virtually indestructible. Unlike cheap, glass heaters, the neo-therm is a resin/thermoplastic heater with a shatterproof outer-casing. Made in Poland and includes a 3-year warranty.
- Manufacturer You can trust. Most manufacturers rate their heaters on the ability to raise an aquarium 2-3°f above ambient temperatures. This is unreliable and misleading, as the average home fluctuates 2-3°f or more throughout the day. Cobalt rates The neo-therm on the ability to raise a tank 11°f above ambient temperatures, so you will never have to worry about overworking the neo-therm or it keeping up!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008AGWZOK |
| ASIN  | B008AGWZOK |
| Best Sellers Rank | #153,772 in Pet Supplies ( See Top 100 in Pet Supplies ) #312 in Aquarium Heaters |
| Brand Name | Cobalt Aquatics |
| Color | Charcoal |
| Customer Reviews | 3.9 3.9 out of 5 stars (1,816) |
| Date First Available | July 10, 2012 |
| Date First Available  | July 10, 2012 |
| Directions | See directions included with the unit |
| Item Dimensions LxWxH | 3.25 x 2.25 x 7.75 inches |
| Item Package Dimensions L x W x H | 8.9 x 3.4 x 2.2 inches |
| Item Weight | 0.4 Pounds |
| Item model number | 31003 |
| Item model number  | 31003 |
| Manufacturer | Cobalt International Inc. |
| Manufacturer  | Cobalt International Inc. |
| Model Name | Neo-Therm |
| Product Dimensions  | 3.25 x 2.25 x 7.75 inches; 6.4 ounces |
| Size | 75w (up to 20 gal) |
| Style | Neo-Therm |
| Target Audience Keyword | Fish and Aquatic, fish, insects, reptiles |

## Images

![Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W - Image 1](https://m.media-amazon.com/images/I/719yN36CFNL.jpg)
![Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W - Image 2](https://m.media-amazon.com/images/I/71Z1B9KrLIL.jpg)
![Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W - Image 3](https://m.media-amazon.com/images/I/8160mSRQk1L.jpg)
![Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W - Image 4](https://m.media-amazon.com/images/I/7182jyYLxwL.jpg)
![Cobalt Aquatics Flat Neo-Therm Heater with Adjustable Thermostat (Fully-Submersible, Shatterproof Design) from 25W to 300W - Image 5](https://m.media-amazon.com/images/I/81sds7tjerL.jpg)

## Available Options

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

## Questions & Answers

**Q: Would this work for a four gallon or is it to big?**
A: I'm using it in a 3 gallon Tetra Cube. As long as it's submerged horizontal or vertically, and not touching substrate, it'll work. The heater is 6.5" tall x 2" wide. I like it because, it heats to a set temperature; if the tank is too warm, it shuts off. I've been using it for a month, checking with a thermometer, and it's been spot on 80, as set for my Betta.

**Q: How many gallons will this heat?**
A: It works really good on our 50 gallon tank, room temperature range from 60 to 75 degree.

**Q: Does it retain setting if there is a power failure ?**
A: Yes it does, retain setting if there is a power failure. A very good heater, with a very wide temperature spread (66° to 96°) to set the heat too. Compact & very reliable! You will not be disappointed.

**Q: About how long should it take to heat a 70 degree 5 gallon tank to 78 degrees?**
A: It took mine under 15 minutes to heat my 2.6 gallon tank from 74 to 78 degrees. If I may, I would suggest that you check out a 50 watt heater, the 25 w is meant for 2 to 4 gallon tanks.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great
*by S***N on August 12, 2015*

I was looking for a heater for my new 2.6 gallon tank but every heater I found either had horrible reviews or weren't adjustable and people said with such a small tank it would cook my fish. When I stumbled upon this heater I was impressed with all of the glowing reviews and everyone saying it not only maintains the water temperature by it actually heats the water. A lot of reviews for other heaters said the heaters only maintained temperature, it didn't raise the temperature. I couldn't ignore all of these reviews, obviously this heater does something right so I ordered one. I just got this heater today and so far it seems to be working perfectly, a little too perfectly as it seems to be warming the water 2 degrees higher than what I set it at (this is confirmed not only with a separate thermometer but also by the heater itself) but this is no big deal, I just set the heater 2 degrees colder than I want. The heater is very slim and not too long, it fits perfectly even in a fairly small tank like mine. I didn't realize when I ordered it that it also acts as a thermometer but the way it's situated in my tank makes it really cumbersome to use it for that purpose (which is no fault of the product itself) so I still rely on a standalone thermometer for that purpose. Both the standalone thermometer and this heater show the same temperature so I'd say this is fairly accurate as well. The only complaint I have is something another reviewer mentioned; the suction cups don't work at all. I push the heater where the suction cups are against the side of the tank and they'll stick but then I'll check the heater a few minutes later and the suction cups have failed. I have no idea if the suction cups just aren't very good or if they're not meant to work on the type of surface I am sticking them to, it's like frosted glass or acrylic, not sure on that. However this isn't a big deal for me personally because the heater itself is situated in a small chamber so it doesn't really move much anyways but if it wasn't I would be worried that the heater might float on its side towards the top of the tank which the instructions say is bad. Overall I am very satisfied with the product and would highly recommend it. Sure it's a bit pricey but then again you get what you pay for. Instead of buying a sub par 10 dollar heater that won't work very well put another 20 dollars towards your purchase and buy this high quality heater.

### ⭐⭐⭐⭐⭐ A Heater for the 21st Century
*by F***T on September 28, 2015*

I've purchased a good number of aquarium heaters over the years and they were all variations of the same function and design, and has virtually remained unchanged for over five decades--a long tube, glass or plastic housing, with heating elements, which were then connected to some sort of thermostat circuitry. My last one, an Aqueon unit, malfunctioned and almost wiped out my whole tank's population because it overheated the aquarium and did not have a safety defeat mechanism. I lost 3 neon tetras, and two nerite snails in this incident and swore, (not verbally), that I would never use tube-type heaters again. Enter the Neo-Therm heater. I was struck by the new, sleek look; very modern and high tech. It wasn't a tube form factor, but was flat, which seems to provide more surface area to be in contact with the water. The LED readout is a great way to check on the water's temperature at a glance, and tells you whether you're up or down in the desired temperature you preset for the unit. One solid LED means your set temp and tank temp are the same. A flashing light before or after your set temp means it is higher or lower. To adjust the temp, you press a button located at the top of the heater, which is a bit difficult to push because it is small, and a bit slippery. But no biggie. Unlike tube type heaters, the numbers on the LED dial actually mean something, whereas, tube style heater numbers don't even correlate to the real temperatures at all, in most cases. All they do is act as a reference point for setting the temperature and this can be extremely inaccurate. I purchased the Neo-Therm and had it up and running in no time at all, not counting the recommended 15-minutes (or more) for the heater to calibrate itself when you first put it into your tank. After this I plugged it in and watched the LED dial display the water temperature. It already has a factory default temperature setting for 78 degrees F., so this makes it very easy to set up. This heater is solid-state, and according to the manufacturer, in the unlikely event that the unit fails, it will simply turn off, and not continue to heat the water. This feature alone makes the purchase worthwhile for me. The accuracy of the Neo-Therm is spot on as I verified the +/- 0.5 Fahrenheit degree accuracy of the unit with a digital thermometer. I was very impressed. The Neo-Therm is sturdy and the outer casing is made from shatter resistant plastic and should hold up for a very long time to bumps and bruises. There were a few issues though. The first unit I ordered was inaccurate to about 1-2 degrees and persisted in this false reading over two week's time. I return this unit, received a new one via Amazon's outstanding customer service, and the replacement unit is flawless. The second one is subjective and doesn't affect the Neo-Therm's functionality, but may be an issue for some. The temperature display numbers, which circle the LED readout from 66 to 96 degrees, are set in multiples of two, or in other words, all even numbers. So if your tank temperature is really 79 degrees F., the display will still show it as either 78 or 80, depending if it decides to round off up or down. So for OCD types, this may be a deal breaker. I've seen the Neo-Therm flash two numbers simultaneously, and perhaps this is the way it tries to show you the in-between numbers, but I only saw this happen once, and it happened with the unit that I returned, so it was probably a fluke. Maybe in the next software update, this could actually be a feature to show the "tweener" numbers. But outside of these two issues, I am very happy with the purchase. Yes, it is more expensive than other aquarium heaters, but if you total the cost of all the heaters you've bought over the years, and have failed or become inaccurate, this makes the Neo-Therm a bargain when you compare the price differentials and performance.

### ⭐⭐⭐⭐⭐ Review
*by C***. on November 23, 2018*

Muy buen producto, ya que los calentadores de acuario generalmente están hechos de cristal, lo cual los hace fragil al impacto. Este calentador está hecho de un material a prueba de impacto, lo cual, dependiendo de tus necesidades, puede ser una mejor opción. Lo utilizo para el acuario de mi tortuga, la cual ha reventado calentadores de cristal. Hasta la fecha, el producto funciona sin contratiempos. La temperatura está expresada en Fahrenheit

## Frequently Bought Together

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-03-15*