---
product_id: 38062267
title: "Milocos 300W Submersible Aquarium Heater with Visible Temperature, Heaters for Fish Tanks Auto Built-in Thermostat with Suction Cup Heating Rod"
brand: "milocos"
price: "1022 kr"
currency: ISK
in_stock: false
reviews_count: 8
url: https://www.desertcart.is/products/38062267-milocos-300w-submersible-aquarium-heater-with-visible-temperature-heaters-fish
store_origin: IS
region: Iceland
---

# Milocos 300W Submersible Aquarium Heater with Visible Temperature, Heaters for Fish Tanks Auto Built-in Thermostat with Suction Cup Heating Rod

**Brand:** milocos
**Price:** 1022 kr
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Milocos 300W Submersible Aquarium Heater with Visible Temperature, Heaters for Fish Tanks Auto Built-in Thermostat with Suction Cup Heating Rod by milocos
- **How much does it cost?** 1022 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/38062267-milocos-300w-submersible-aquarium-heater-with-visible-temperature-heaters-fish)

## Best For

- milocos enthusiasts

## Why This Product

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

## Description

To Please Your Water Pets - Want your love tropical fish and other water pets to be happy and active all the time? - Get them a aquarium thermostat heater! Milocos new arrival of 300W submersible heater is able to auto adjust the temperature increasing speed according to the changes of heating temperature, since it adopted smart thermostat chip and precise induction probe, allowing your fish to gradually adapt in relatively mild water. automatically heats the water to the set temperature when the actual temperature in tank is 2℃/3.6℉ less than the Pre-set value (68℉- 93℉). perfect for most 120-250L aquarium and fish tank. Pets Friendly Protection This heater has built-in auto power off function in water-shortage and out-of-water conditions as well as over-temperature protection, while the eco-friendly heat resistant plastic sheathing and shatterproof glass tube that ensures no harm to your water pets, creating a safe and comfortable environment whether in deep autumn or winter. (PS: the heating speed will slow down in an extremely colder external ambient temperature.) Important Notes: 1. PLS cut off the power before your hands putting in water. 2. Cut off the power supply and wait for the cooling of the heater before you clean the aquarium/heater. 3. Keep the heater fully into water for 10mins to adapt to the current temperature of the aquarium when in use. 4. The heater must be fully submerged in water during use and the water line should be at least 1.2 inches. Specification: Power: 300W Voltage: 110-120V 50-60Hz Rated Current: less than 30mA Temperature Control Range: 68℉-93℉ Power Cord Length: 6ft Waterproof Rate: IP68 Tank Capacity: 120-250 L / 50-70 (US gal) Suitable Fish Tank: 47-63 inches Product Dimension: 14.8"x1.2"x1.2" Material: Metal Probe + Quartz Glass + Plastic

## Features

- Allow Water Pets Lively Swim - adopts high-efficiency heating pipe and precise induction probe, auto warming up the water to the Pre-Set Temp that make your tropical fish enjoy happy and vivid movement, Say Goodbye to lifeless deep autumn and cold winter
- Smart Induction Thermostat - built-in imported smart chip and probes, automatically heats the water to the set temperature when the actual temperature in tank is 2℃/3.6℉ less than the Pre-set value (68℉- 93℉). Importantly, it self-adjusts the heating speed based on the changing temperature
- Safety Protection - Auto Power-off in out-of-water and water shortage conditions, also built-in Over-Temperature Protection (blue light's on) stops heating immediately, creating a safer and more comfortable aquarium environment for your love fish, turtles or other water pets
- Everything's in Sight - clear visible LED digital readout provides an intuitive and easy way to understand the heater operation, bringing more convenience to customize the thermostat value based on various aquariums (120-250L), ornamental fishes, amphibians turtles, etc
- Outstanding Treatment - made of anti-explosion quartz glass tube with heat-resistant plastic sheathing and IP68 double sealing treatment tech, better avoid water seepage due to fish collision to ensure long lasting

## Images

![Milocos 300W Submersible Aquarium Heater with Visible Temperature, Heaters for Fish Tanks Auto Built-in Thermostat with Suction Cup Heating Rod - Image 1](https://m.media-amazon.com/images/I/61NRHfEmpXL.jpg)
![Milocos 300W Submersible Aquarium Heater with Visible Temperature, Heaters for Fish Tanks Auto Built-in Thermostat with Suction Cup Heating Rod - Image 2](https://m.media-amazon.com/images/I/71nhu8wSRPL.jpg)
![Milocos 300W Submersible Aquarium Heater with Visible Temperature, Heaters for Fish Tanks Auto Built-in Thermostat with Suction Cup Heating Rod - Image 3](https://m.media-amazon.com/images/I/61NFjEbvu8L.jpg)
![Milocos 300W Submersible Aquarium Heater with Visible Temperature, Heaters for Fish Tanks Auto Built-in Thermostat with Suction Cup Heating Rod - Image 4](https://m.media-amazon.com/images/I/61FpjdHaMYL.jpg)
![Milocos 300W Submersible Aquarium Heater with Visible Temperature, Heaters for Fish Tanks Auto Built-in Thermostat with Suction Cup Heating Rod - Image 5](https://m.media-amazon.com/images/I/71+1lO3ENnL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Nice heater.  Useless instructions.
  

*by T***W on Reviewed in the United States on February 6, 2017*

I have turtles, and they won't eat in the winter if they get cold.  Putting a glass heater in the tank is not an option because they destroy everything, and my previous two "unbreakable" heaters both died.  I decided to try this one because of the sleeve that goes over the glass body.  So far, my little destructors have not been able to break it, which is good.  I'm giving it four stars because the setting directions are AWFUL!!  So far, I'm pleased with the performance, but I had to figure out how to set it because the directions are useless.  Basically, submerge the heater, plug it in, and push the button on the end to toggle through temp presets.  You can increase by a degree at a time with the little button on the cord.  Although the directions claim to be Celsius, mine displayed in Fahrenheit.  I've only had it set up a few weeks, but I love the display because I always know the temp in the tank now.

### ⭐⭐⭐⭐⭐ 







  
  
    BOTTOM LINE...LOVE THIS HEATER, WOULD HIGHLY RECOMMEND IT!!!!!!
  

*by A***R on Reviewed in the United States on February 1, 2017*

Best heater I've had (this my 4th in  3 years).  My active turtle cannot move it, because it has very strong suction cups which is important. He was always dislodging my old heaters and in the process always moved the flimsy dials  that adjusted the temperature. But this heater is so well made, It has very strong suction cups, so he cant move it, though he still keeps trying. Also this heater has a push button on the side which is not accessible as well as an external adjuster. The temperature that it is set at is very visible in a small window with a continuous easy to read brightly lit red digital display.  Also like the plastic covering which protects glass heater.

### ⭐ 







  
  
    Junk
  

*by P***R on Reviewed in the United States on February 14, 2017*

Read the reviews and thought it would be greatUnfortunately the thermostat is 4 degrees off and can't be calibrated i verrified this with the company... plus the useless blue light is so bright  that it shines on my wall and i can see the shadows of the fish on the wall... there is no purpose for the blue light... because if it is heating then the red light is on if its not heating then the red light is off like every other heater works... no need for the blue one...  if the thermostat was accurate and had no bright blue annoying light.. then i would have given it 5 stars

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-05*