---
product_id: 27771614
title: "Ultratherm Under Tank Heater, 11x23"
brand: "ultratherm"
price: "£5.61"
currency: GBP
in_stock: false
reviews_count: 8
url: https://www.desertcart.co.uk/products/27771614-ultratherm-under-tank-heater-11x23
store_origin: GB
region: United Kingdom
---

# Ultratherm Under Tank Heater, 11x23

**Brand:** ultratherm
**Price:** £5.61
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Ultratherm Under Tank Heater, 11x23 by ultratherm
- **How much does it cost?** £5.61 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/27771614-ultratherm-under-tank-heater-11x23)

## Best For

- ultratherm enthusiasts

## Why This Product

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

## Description

low wattage, energy efficient, safe and effective heat for Reptiles and Amphibians or other small exotics kept in a terrarium. Under Tank Heater

## Features

- Energy Efficient
- Safe
- Infrared heat

## Images

![Ultratherm Under Tank Heater, 11x23 - Image 1](https://m.media-amazon.com/images/I/81BMXT3wY+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Perfect temp!
  

*by S***N on Reviewed in the United States 🇺🇸 on December 15, 2019*

Heats my 75 gall to a perfect 80 degrees!

### ⭐⭐⭐⭐⭐ 







  
  
    Best Tank Heater for application with deep substrate (Hermit Crabs)
  

*by M***R on Reviewed in the United States 🇺🇸 on December 27, 2013*

I use this heater for my 50 gallon hermit crab tank. I mount it to the back of my tank instead of the bottom for maximum air heating.  Use foam insulation behind it for the best results. No sticky mess with this like the other kinds. just use packing tape to mount it.

### ⭐ 







  
  
    Not hot
  

*by G***E on Reviewed in the United States 🇺🇸 on May 13, 2018*

Trash. I only bought this because all but one review was 5 stars. I left it on for 2 days to see if it just needed time to warm up, but its still only mildly warm to the touch. Definitely doesn't put any heat to the other side of the glass let alone substrate. Very weird this is the maximum heat it puts out

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**Shop now:** [https://www.desertcart.co.uk/products/27771614-ultratherm-under-tank-heater-11x23](https://www.desertcart.co.uk/products/27771614-ultratherm-under-tank-heater-11x23)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-25*