SKU: 76153356822

EHEIM thermocontrol 300 heater

Sale price$166.45 Regular price$184.95
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

EHEIM thermocontrol 300 heaterWith the EHEIM precision heater, your aquatic friends will enjoy the perfect temperature, no matter the aquarium size. Diameter : 36 mm Height: 506 mm Performance at 50 Hz: 300 Watt Max. temperature: 34C Sea water: Yes Min. temperature: 18C Freshwater: Yes Packing dimensions (Width): 6. 5 cm Packing dimensions (Height): 58. 5 cm Packing dimensions (Depth): 5 cm For aquariums up to approx.: 1000 Liter For aquariums of about: 600 Liters Simple yet

With the EHEIM precision heater, your aquatic friends will enjoy the perfect temperature, no matter the aquarium size.

  • Diameter Ø: 36 mm
  • Height: 506 mm
  • Performance at 50 Hz: 300 Watt
  • Max. temperature: 34°C
  • Sea water: Yes
  • Min. temperature: 18°C
  • Freshwater: Yes
  • Packing dimensions (Width): 6.5 cm
  • Packing dimensions (Height): 58.5 cm
  • Packing dimensions (Depth): 5 cm
  • For aquariums up to approx.: 1000 Liter
  • For aquariums of about: 600 Liters

Simple yet effective ideas often yield the best results. Take the aquarium heater, for instance, designed as a rod that hangs effortlessly in the water to provide warmth. While the basic principle has remained unchanged for decades, significant advancements have occurred since then. The EHEIM adjustable heater is now a state-of-the-art electronic thermal device equipped with the latest technology. Its jacket, crafted from specialized laboratory glass, enhances the heating surface, acts as a heat shield, and ensures optimal, uniform heat distribution. Whether you need to heat a 20-liter or a 1000-liter aquarium, you have 9 sizes available to choose from.

Advantages of the EHEIM thermostatic heaters:

  • Accurate temperature adjustment from 18 to 34 °C
  • Easy and secure recalibration (±2 °C)
  • Temperature control precision of ± 0.5 °C
  • Maintains a steady heat level
  • Heating function indicated by a control lamp
  • Fully submersible (watertight)
  • Automatic dry run shut-off feature (Thermo Safety Control)
  • A glass jacket enhances the heating surface and guarantees optimal heat distribution
  • Convenient cable length of approximately 170 cm
  • Includes double suction cup holder
  • Nine sizes suitable for aquariums ranging from 20 to 1000 liters
  • Appropriate for both fresh and marine water

Precision, user-friendliness, quality, and safety — all “Made in Germany.” The EHEIM aquarium heater represents an evolution of the classic heating rod. You can precisely set the temperature between 18 and 34 °C and calibrate it if needed (±2°). The temperature control accuracy is ± 0.5 °C, ensuring consistent heating. A control lamp indicates when the heating function is active. The rod is completely watertight, can be fully submerged, and features an automatic dry run shut-off (Thermo Safety Control), making it suitable for both freshwater and saltwater environments. A key innovation is the glass jacket, which:

  • Expands the heating surface
  • Concentrates heat for optimal, even distribution
  • Acts as a heat shield (safe for your aquatic life)

The jacket is made from high-quality laboratory glass, designed for research use, ensuring it is free from harmful pollutants that could leach into the water. It is resistant to chemical and biological substances, and its construction prevents any fissures or cracks that could allow condensation to infiltrate. Even significant temperature changes during water changes will not harm this durable glass.

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: 76153356822

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4.2 ★★★★★
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Keri
Omaha, US
★★★★★ 1
Toy Not Safe For Chewers
Size: Medium 8", Style: Rubber Dog Toy, Size: Medium 8", Style: Rubber Dog Toy
We bought this tire toy for our puppy for Christmas. It was advertised as a natural rubber dog toy and implied to be durable. It lasted less than two hours. Our puppy was able to chew off small pieces of the rubber and swallowed some of the bits, which made her extremely sick. She ended up vomiting after ingesting pieces of this toy. I would not recommend this toy, it is not safe especially for dogs that like to chew.
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Reviewed in the United States on January 14, 2026
C
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Chantelle Bechtel
Alexandria, US
★★★★★ 5
Definitely recommend for large breed heavy chewing dogs
Size: Large 10", Style: Rubber Dog Toy
Great for a large breed dog. I got the 10inch for my large breed dog. Best choice ever.
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Reviewed in the United States on May 26, 2026
R
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Rockingrammie
Lexington, US
★★★★★ 4
Nice big tire toy
Size: Large 10", Style: Rubber Dog Toy
Our dog has had a tire toy about the same size as this one for 2 years, but it's finally been worn down from his love and zest for it along with weather. When I saw this one, I got excited! Great size for our 80lb 3yo pittie and pretty tough too, although, it's beginning to show signs of wear in only 3 weeks of him playing with it. It's not nearly as rugged as his old rubber tire. We'll have to see how long it actually lasts before I say the price was worth it or not.
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Reviewed in the United States on October 8, 2023
I
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Isaac Erwin
Carnegie, US
★★★★★ 5
Great dog toy for large breeds!
Size: Large 10", Style: Rubber Dog Toy, Size: Large 10", Style: Rubber Dog Toy
My dog Judge is a 110-pound German Shepherd that loves this tire! It is not the traditional ball that dogs like to play with, but it is so much safer since larger breeds might choke on a ball, as it’s easier to swallow! Judge doesn't go anywhere without his tire! From an owner's standpoint, it’s great also since it’s easy to throw and roll as well as last longer than most toys since it’s made of thick rubber! Best toy for the money I have found by far! Judge has the size large 10”!
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Reviewed in the United States on February 26, 2026
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Verified Purchase
Karen J Carter
San Leandro, US
★★★★★ 3
Durable toy
Size: Medium 8", Style: Rubber Dog Toy
This is way too big for my dog. I thought it would be smaller when I ordered it.
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Reviewed in the United States on February 22, 2026

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