---
product_id: 391084921
title: "Cobalt AquaticsNeo-Therm Pro Aquarium Heater 25W - Submersible, Accurate ±0.5°F Electronic Thermostat, Shatterproof for Freshwater & Saltwater Tanks"
brand: "cobalt aquatics"
price: "€ 120.32"
currency: EUR
in_stock: false
reviews_count: 7
url: https://www.desertcart.com.cy/products/391084921-cobalt-aquaticsneo-therm-pro-aquarium-heater-25w-submersible-accurate-0
store_origin: CY
region: Cyprus
---

# Submersible design Accurate ±0.5°F Shatterproof casing Cobalt AquaticsNeo-Therm Pro Aquarium Heater 25W - Submersible, Accurate ±0.5°F Electronic Thermostat, Shatterproof for Freshwater & Saltwater Tanks

**Brand:** cobalt aquatics
**Price:** € 120.32
**Availability:** ❌ Out of Stock

## Summary

> 🌊 Dive into Precision Heating!

## Quick Answers

- **What is this?** Cobalt AquaticsNeo-Therm Pro Aquarium Heater 25W - Submersible, Accurate ±0.5°F Electronic Thermostat, Shatterproof for Freshwater & Saltwater Tanks by cobalt aquatics
- **How much does it cost?** € 120.32 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/391084921-cobalt-aquaticsneo-therm-pro-aquarium-heater-25w-submersible-accurate-0)

## 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

- • **Safety First:** Auto shut-off circuitry prevents overheating, keeping your aquatic friends safe.
- • **Durable Design:** Shatterproof outer casing ensures longevity and reliability.
- • **Precision Heating:** Maintain the perfect aquatic environment with an accuracy of ±0.5°F.
- • **User-Friendly Interface:** LED display for easy monitoring of set and tank temperatures.
- • **Versatile Compatibility:** Ideal for freshwater, saltwater, and turtle tanks up to 55 gallons.

## Overview

The Cobalt Aquatics Neo-Therm Pro Aquarium Heater 25W is a high-performance submersible heater designed for both freshwater and saltwater tanks. With an electronic thermostat that maintains temperatures from 68°F to 94°F with ±0.5°F accuracy, this shatterproof heater is perfect for aquarists looking for reliability and safety. Its user-friendly LED display and auto shut-off feature make it an essential accessory for any aquarium setup.

## Description

Cobalt AquaticsNeo-Therm Pro Aquarium Heater 25W - Submersible, Accurate ±0.5°F Electronic Thermostat, Shatterproof for Freshwater & Saltwater Tanks

## Features

- MADE IN EUROPE with place anywhere suction cups and reversible mounting bracket. This heater for fish tank works as a fish heater, turtle heater, or mini aquarium heater.
- FISH TANK HEATER with electronic thermostat from 68°F up to 94°F, accurate to ±0.5°F. Neo-Therm Pros make excellent fish tank accessories, aquarium accessories, or turtle tank accessories.
- SUBMERSIBLE WATER HEATER as turtle tank heater is one of your must have turtle tank accessories when setting up a new turtle tank. Small aquarium heater for 5, 10, 20, 30, up to 55 gallon.
- SHATTERPROOF OUTER CASING makes the aquarium heaters virtually indestructible. Auto shut-off circuitry prevents overheating of aquarium temperature controller. LED display for both Set and Tank Temp.
- AQUARIUM HEATING is a crucial aspect of maintaining saltwater tank, freshwater tank, or turtle tank. A fish heater is one of the first fish tank accessories needed when setting up habitat.

## Images

![Cobalt AquaticsNeo-Therm Pro Aquarium Heater 25W - Submersible, Accurate ±0.5°F Electronic Thermostat, Shatterproof for Freshwater & Saltwater Tanks - Image 1](https://m.media-amazon.com/images/I/81zR+tmIC7L.jpg)
![Cobalt AquaticsNeo-Therm Pro Aquarium Heater 25W - Submersible, Accurate ±0.5°F Electronic Thermostat, Shatterproof for Freshwater & Saltwater Tanks - Image 2](https://m.media-amazon.com/images/I/91mCyH5m-DL.jpg)
![Cobalt AquaticsNeo-Therm Pro Aquarium Heater 25W - Submersible, Accurate ±0.5°F Electronic Thermostat, Shatterproof for Freshwater & Saltwater Tanks - Image 3](https://m.media-amazon.com/images/I/81t9NZf0TIL.jpg)
![Cobalt AquaticsNeo-Therm Pro Aquarium Heater 25W - Submersible, Accurate ±0.5°F Electronic Thermostat, Shatterproof for Freshwater & Saltwater Tanks - Image 4](https://m.media-amazon.com/images/I/91608TEIOJL.jpg)
![Cobalt AquaticsNeo-Therm Pro Aquarium Heater 25W - Submersible, Accurate ±0.5°F Electronic Thermostat, Shatterproof for Freshwater & Saltwater Tanks - Image 5](https://m.media-amazon.com/images/I/81JzZv9GoeL.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

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Works great
  

*by S***N on Reviewed in the United States 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.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    So Far, sooo Good!
  

*by R***R on Reviewed in the United States on October 13, 2014*

With fall in full swing and winter rearing it's ugly head, I needed a good heater and fast. Past experiences suggest smaller "generic" beta type heaters can't heat up your tank enough, or worse tends to over heat when your room temp is warm(er).This Cobalt Neo-Therm Heater is as rock steady as you can get! Especially living in a cooler climate. Granted, there are some con's to this device. However, the pro's out weigh the cons.I currently have the 
  
Aqueon Mini Bow 5 Desktop Aquarium







  
  
    . You know, with the built in filter just under the light hood fixture?  And this heater sits up and down on the right side corner. It does take up a little space, but it isn't much at all.And honestly, I think it looks like it takes up much more, because the device is long and square-go-like. And when adding the suction cups and bracket system, it sticks out a wee bit more and looks bulky. Plus, with a "bow-front" viewing area and the device being under water, it naturally looks bigger than it really is.But again, isn't bad and a small sacrifice considering the desired goal of temperature.Truth be told, it will fluctuate a few degree's if you live in a cooler region of the country / world.  But I still have my box-fan blowing and window cracked a bit at night here at 6,500 ft above the sea. In the mornings, the Cobalt display registers at least 4 or 5 degrees under the temp I set at 82 degrees. But I know once I close this window for the winter, I don't believe I will see these numbers changing much, if at all.Don't be a cheap skate! It's worth the cost if your running a small tank. I am using the lowest watt Cobalt of the line at 25watts. I considered buying the next step in watts above this, but I think I made the right call. And my beta "Mr. Snerdly" is as happy as can be.Pro's:Rock solid tempThin flat designNifty bracket system w/ 2 suction cupsEasy to read LED displayCon's:Long and obviousWill fluctuate "IF" you're in a cold region.

### ⭐ 







  
  
    Broke within 2 weeks, tank got dangerously cold
  

*by M***D on Reviewed in Canada on October 14, 2023*

Loved all the features and small design about this. Great display, easy to set, temperature stability.. Except, it broke within 2 weeks. Thankfully, I use a separate temperature gauge to check and had a old emergency heater in the cupboard.

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-05*