SKU: 10903166423

EHEIM thermocontrol e 400 heater

Sale price$153.17 Regular price$170.19
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Description

EHEIM thermocontrol e 400 heaterWith the EHEIM thermocontrol e heating element, your fish will enjoy the ideal temperature with even greater precision in every aquarium. Often, the simplest ideas are the most effective, and this holds true for the aquarium heating element. It is designed to be easily submerged in the water, providing efficient heating just as it has for many years. However, the EHEIM controller heater has evolved into a highly advanced thermal device. The

With the EHEIM thermocontrol-e heating element, your fish will enjoy the ideal temperature with even greater precision in every aquarium. Often, the simplest ideas are the most effective, and this holds true for the aquarium heating element. It is designed to be easily submerged in the water, providing efficient heating just as it has for many years. However, the EHEIM controller heater has evolved into a highly advanced thermal device. The temperature can be accurately set and is measured with enhanced precision, maintained consistently thanks to advanced electronics. The special laboratory glass coating not only increases the heating surface but also serves as a heat shield, ensuring an even distribution of warmth. Whether you need to heat a 20-liter or a 1200-liter aquarium, there are 10 different sizes available.

Advantages of the EHEIM control heater thermocontrol-e

  • Accurate temperature adjustment from 20 to 32 °C
  • No need for readjustment
  • Control accuracy of ± 0.5 °C
  • Stable temperature maintenance
  • Control lamp indicates heating status (red: heating; green: temperature achieved)
  • Fully submersible and waterproof
  • Equipped with dry-running protection (Thermo Safety Control)
  • The glass coating enhances the heating surface and ensures optimal, uniform heat distribution
  • Convenient cable length of approximately 170 cm
  • Includes double suction holder
  • Available in 10 sizes for aquariums ranging from 20 to 1200 liters
  • Compatible with both fresh and saltwater
  • Exceptional safety and reliability - 3 years warranty

Combining precision, comfort, quality, and safety, the EHEIM thermocontrol aquarium control heater is a significant advancement over the original heater designed by engineer Eugen Jäger decades ago. Before its invention, maintaining an appropriate water temperature was a challenge, often employing complicated or unconventional methods, such as placing the aquarium in sunlight or near a heater or stove.

The thermocontrol-e represents the latest electronically controlled version of this legendary heating element. You can finely adjust the temperature between 20 and 32 °C with a control accuracy of ± 0.5 °C, ensuring a steady temperature. A control lamp will indicate whether the heater is active. This heater is completely waterproof, can be fully immersed, and features dry-run protection (Thermo Safety Control), making it suitable for both fresh and marine water.

One of the notable innovations is the glass coating, which:

  • Increases the heating surface,
  • Consolidates the heat, ensuring optimal and even heat output, and
  • Acts as a heat shield (safe for aquarium inhabitants to touch).

This coating is crafted from special laboratory glass designed for research purposes, ensuring it is free from pollutants that could leach into the water. It is resistant to chemical and biological substances, is crack-proof, and can withstand extreme temperature fluctuations, such as those that may arise during water changes.

Diameter Ø: 36 mm
Height: 496 mm
Power at 50 Hz: 400 Watt
Max. temperature: 32 °C
Saltwater compatible: Yes
Min. temperature: 20 °C
Freshwater compatible: Yes
Packaging: 6 Part(s)
For aquariums up to approximately: 1200 liters
For aquariums of about: 1000 liters
Manufacturer guarantee: 3 years

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 10903166423

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Lisa
Port Orchard, US
★★★★★ 5
The best 50 spf sunscreen!
Size: 3.4 Fl Oz (Pack of 1), Style: SPF 50
This is the best 50 spf mineral sunscreen I have found! It really gives a barrier to prevent sunburn on the skin! I use this 50 spf sunscreen on myself my kids my husband! It stays on for a really long time! And on my horses with pink noses! The cream is light, a little watery in the palm. It feels light and is not sticky on the skin. The smell is lightly tropical, which are my favorite smells! It does leave a faint white color on the skin when you put it on. It does it’s job really good stopping a sunburn!
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Reviewed in the United States on August 21, 2024
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D. Golden
Dallas, US
★★★★★ 4
Great sunscreen, leaky bottle cap
Size: 3.4 Fl Oz (Pack of 1), Style: SPF 50
Great sunscreen. Smells good, but not overpowering. Best mineral sunscreen I’ve used—still a bit pasty, but rubs in better than any other brand. The bottle design is horrible. The cap falls off with the slightest touch. If you like sunscreen in the bottom of your beach bag, the bottle is great.
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Reviewed in the United States on April 19, 2026
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H. Dorner
Fort Morgan, US
★★★★★ 1
Did not protect
Size: 3.4 Fl Oz (Pack of 1), Style: SPF 50
Product smells great and goes on better than most mineral sunscreens. It was labeled as "reef safe" so I assumed it would work well in water. It did not. After just a half hour in the Caribbean water, my skin was red. The product did not say "waterproof" so we decided to use it only when we were away from the beach. Unfortunately, even in the cold spring weather of our northern climate we still ended up with red skin. We had no choice but to throw away the rest of the bottle. Do not expect this lotion to protect you from the damaging rays of the sun.
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Reviewed in the United States on May 8, 2026
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Raul D
Carnegie, US
★★★★★ 5
Sunscreen
Size: 3.4 Fl Oz (Pack of 1), Style: SPF 50
Great sunscreen. You do have to really work into your skin.
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Reviewed in the United States on May 6, 2026
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Torie
Battle Creek, US
★★★★★ 5
Great sport block for sensitive skin
Size: 3.4 Fl Oz (Pack of 1), Style: SPF 50
I use this whole playing tennis or pickleball, it might be a little much for everyday. Does not irritate my sensitive skin. Rich enough for dry skin. Very slightly white cast that quickly fades. Does not run or bother my eyes for sports. Basically perfect in all categories.
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Reviewed in the United States on March 10, 2026

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