---
product_id: 91012015
title: "Orlushy Submersible Aquarium Heater, Adjustable Fish Tahk Heater with Free Thermometer Suitable for Marine Saltwater and Freshwater"
price: "€ 42.81"
currency: EUR
in_stock: true
reviews_count: 13
url: https://www.desertcart.hr/products/91012015-orlushy-submersible-aquarium-heater-adjustable-fish-tahk-heater-with-free
store_origin: HR
region: Croatia
---

# Energy-saving intermittent heating Accurate real-time temperature monitoring Durable heat-resistant ABS shell Orlushy Submersible Aquarium Heater, Adjustable Fish Tahk Heater with Free Thermometer Suitable for Marine Saltwater and Freshwater

**Price:** € 42.81
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your aquatic world perfectly cozy — because your fish deserve the best! 🌊

## Quick Answers

- **What is this?** Orlushy Submersible Aquarium Heater, Adjustable Fish Tahk Heater with Free Thermometer Suitable for Marine Saltwater and Freshwater
- **How much does it cost?** € 42.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/91012015-orlushy-submersible-aquarium-heater-adjustable-fish-tahk-heater-with-free)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Heat-resistant ABS casing prevents deformation and ensures safe submersion
- • **Built to Last:** Nickel-chromium heating wire and quartz glass for rapid, corrosion-free heating
- • **Universal Compatibility:** Six sizes tailored for freshwater, saltwater, and turtle tanks
- • **Bonus Thermometer Included:** Monitor your aquatic environment in real-time with the free thermometer
- • **Precision Temperature Control:** Smart red/green light signals for stable, energy-efficient heating

## Overview

The Orlushy Submersible Aquarium Heater offers customizable heating with six size options, ensuring perfect temperature control for freshwater and marine tanks. Featuring energy-efficient intermittent heating indicated by red/green lights, a durable heat-resistant ABS shell, and a corrosion-resistant nickel-chromium heating element, it guarantees safe and reliable operation. Included is a free thermometer for real-time monitoring, making it ideal for both novice and experienced aquarists seeking hassle-free, stable aquarium temperature management.

## Description

Orlushy is always on the way of innovating and optimizing our products. Pursuit of excellence is our unceasing goals. We are committed to bring every aquarium enthusiast high-quality and stable aquarium supplies, reducing most of your worries and unnecessary fuss in each growing process. Both the novice and advanced aquarist can easily get started with our products. Orlushy is always on the way of innovating and optimizing our products. Pursuit of excellence is our unceasing goals. We are committed to bring every aquarium enthusiast high-quality and stable aquarium supplies, reducing most of your worries and unnecessary fuss in each growing process. Both the novice and advanced aquarist can easily get started with our products. Aquarium Heater Visit the Store Aquarium Heater Visit the Store aquarium heater Visit the Store aquarium heater aquarium air pump Visit the Store aquarium air pump aquarium dc pump Visit the Store aquarium dc pump

Review: Best bang for buck- but be careful - So, I love this heater because it is sturdy, reliable, and keeps the water temperature nice and warm even when temperatures dip overnight. But most importantly, it's affordable. I'm a broke college student trying to take care of my only quarantine betta fish friend, so price and reliability is of utmost importance to me. That being said, this is a good heater, but it comes with some quirks. 1) The temperature dial is not accurate. This heater tends to run hotter than what it is set to, especially for smaller tanks. For example, right now in my 6 gallon I have it set to 73. This keeps it at 80 degrees consistently, all the time. Make sure you run tests to find out where the dial actually needs to be. I'm kind of used to doing this because most heaters I've found are not accurate in this regard. 2) I think the suction cups are wearing away over time. Hasn't been too much of an issue yet (had these heaters for almost a year now) Quirks aside, for the price I feel you can't beat it and I've been really happy with it so far. Just be cautious and test your equipment before trusting it with live fish in the tank. Same goes for the extra thermometer. I don't really trust these digital ones so I frequently test them with other submersed type thermometers to check them. So far they've tested accurately for me. I mostly use these digital ones when I am acclimating fish to check that the tank/bag temperature matches up.
Review: Totally recommend - I’ve been cycling my tank now for a week and a half and this heater works wonderfully. Super easy to use and assembly was also just as easy. It heats my 36 gallon very well and isn’t too obnoxious or large since I have mine situated right in the middle of my tank. Just a note for anyone looking: this product says you can submerse it sideways in the description. Honestly I think that is really stupid. I wouldn’t ever do that. I’m sure all the reviews that are saying it lights on fire had the cord part inside the water (aka sideways). I would also leave the adjuster part out of the water if possible. I don’t know, that’s just my dad’s old wisdom talking. Just use it vertical. It works literally the same. This is such a great product. I really recommend it a lot. Great value for money and works just as described. Ready to use out of the box.

## Features

- Orlushy aquarium heaters come in six different sizes, suitable for small fish tanks, aquariums and turtle tanks. Please choose the right wattage aquarium heater according to our size chart.
- Stable Heating: Stair shape heating that red light is on and heater starts to intermittently heat the water to the set temp, saving energy and electricity. When green light is on, heater stops working and maintains the temperature constantly. It also come with a separate thermometer for real-time monitoring of the aquarium water temperature.
- Durable & Material: The durable material of the heater ensures safe operation. The outer shell covering the whole body of the heater is made of heat-resistant ABS material that it won’t deform and melt under high temperature. The heating rod is made of nickel-chromium heating wire to faster heating rate, and non-corrosive quartz glass.
- Cautions: 1.Please ensure the heater is 100% submerged into the water before plug in the power. 2. Please unplug the power and cool down the heater for 10-20 minutes before taking it out to clean the fish tanks or change the water.
- Guaranteed Customer Service: Orlushy fish tank heater is made with great safety and durability for use. We guarantee 1 -Year warranty. If there is any issue with our product, please contact us, and we would gladly offer you after-sales service.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.4 out of 5 stars 4,898 Reviews |

## Images

![Orlushy Submersible Aquarium Heater, Adjustable Fish Tahk Heater with Free Thermometer Suitable for Marine Saltwater and Freshwater - Image 1](https://m.media-amazon.com/images/I/51i6OZ+mJML.jpg)

## Available Options

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

## Questions & Answers

**Q: I have a hermit cab tank, can i used this for a tank that is not submerged in water?**
A: I would NOT. It is meant to be in water, and I think it would get too hot without water to disperse the heat.

**Q: Could you use this to take the chill off in a atrium?**
A: no, this must be completely under water and 150 watts is not going to have much impact on such a space.....better use 150 watt light bulb or more.

**Q: The included digital Thermometer did not include a battery. Does anyone know what # watch battery it requires?**
A: Mine did come with the battery, and "works". How accurate it is remains to be seen. I just received and installed the thermometer and heater tonight, so I'll check in the morning and compare to another thermometer.

**Q: Digital Thermometer supplied with this heater is almost 3°F off. Is there a way to calibrate it?**
A: Mine is 10 degrees off. I can not express how unhappy I am with this product. The dial on the top of the heater is nowhere near what the water temp is, and the digital thermometer they send with it is horrible.
Two other sources say they are off by 10 degrees. 
Never again....

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best bang for buck- but be careful
*by C***R on December 14, 2020*

So, I love this heater because it is sturdy, reliable, and keeps the water temperature nice and warm even when temperatures dip overnight. But most importantly, it's affordable. I'm a broke college student trying to take care of my only quarantine betta fish friend, so price and reliability is of utmost importance to me. That being said, this is a good heater, but it comes with some quirks. 1) The temperature dial is not accurate. This heater tends to run hotter than what it is set to, especially for smaller tanks. For example, right now in my 6 gallon I have it set to 73. This keeps it at 80 degrees consistently, all the time. Make sure you run tests to find out where the dial actually needs to be. I'm kind of used to doing this because most heaters I've found are not accurate in this regard. 2) I think the suction cups are wearing away over time. Hasn't been too much of an issue yet (had these heaters for almost a year now) Quirks aside, for the price I feel you can't beat it and I've been really happy with it so far. Just be cautious and test your equipment before trusting it with live fish in the tank. Same goes for the extra thermometer. I don't really trust these digital ones so I frequently test them with other submersed type thermometers to check them. So far they've tested accurately for me. I mostly use these digital ones when I am acclimating fish to check that the tank/bag temperature matches up.

### ⭐⭐⭐⭐⭐ Totally recommend
*by J***G on March 8, 2026*

I’ve been cycling my tank now for a week and a half and this heater works wonderfully. Super easy to use and assembly was also just as easy. It heats my 36 gallon very well and isn’t too obnoxious or large since I have mine situated right in the middle of my tank. Just a note for anyone looking: this product says you can submerse it sideways in the description. Honestly I think that is really stupid. I wouldn’t ever do that. I’m sure all the reviews that are saying it lights on fire had the cord part inside the water (aka sideways). I would also leave the adjuster part out of the water if possible. I don’t know, that’s just my dad’s old wisdom talking. Just use it vertical. It works literally the same. This is such a great product. I really recommend it a lot. Great value for money and works just as described. Ready to use out of the box.

### ⭐⭐⭐⭐ Fixed Temperature Control
*by L***E on February 15, 2025*

I purchased this heater as a replacement since my last heater finally gave out. The heater itself does its job, it heats the water to temp and keeps it somewhat to where it’s set. It was a great addition having the temp probe and digital readout. I have tested it against another heater’s internal control and mercury thermometer and it seems to be mostly accurate. My only issue, and reason for giving this thermometer a four star review, is because the temperature dial on the top of the heater, are the ONLY temperatures you may choose to heat your aquarium. It is not variable, or adjustable. I found if I set the heater to 75, the tank would sit around 72, and if set to 79, it will stay at 79. The seven degree swing seemed rather large IMO. Like I said, the temp is not variable, and if the selector on the heater is not lined up with a number, the heater will not turn on at all or heat the aquarium. All in all it does its job, but if you want variability when selecting a temperature, spend a little extra money and buy a heater with that option.

## Frequently Bought Together

- Orlushy Submersible Aquarium Heater,100W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater
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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-13*