SKU: 52965972966

EHEIM thermocontrol 250 heater

Sale price$166.45 Regular price$184.95
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Description

EHEIM thermocontrol 250 heaterWith the EHEIM precision heater, your fish will enjoy the perfect temperature in any aquarium. Diameter 36 mm Height 452 mm Performance at 50 Hz 250 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. 600 Liter For aquariums of about 400 Liters Simple ideas often turn out to be the most effective.

With the EHEIM precision heater, your fish will enjoy the perfect temperature in any aquarium.

  • Diameter Ø 36 mm
  • Height 452 mm
  • Performance at 50 Hz 250 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. 600 Liter
  • For aquariums of about 400 Liters

Simple ideas often turn out to be the most effective. Take, for instance, the aquarium heater designed as a rod. This heating rod is easily suspended in the water to warm it. While the concept has remained unchanged for decades, significant advancements have been made over time. Today, the EHEIM adjustable heater represents a state-of-the-art electronic heating device that utilizes the latest technology. Its jacket, crafted from specialized laboratory glass, enhances the heating surface, acts as a heat shield, and guarantees optimal, uniform heat distribution. Whether you need to heat a 20-liter or a 1000-liter aquarium, you can choose from 9 available sizes.

Advantages of the EHEIM thermostatic heaters

  • Accurate temperature adjustment from 18 to 34 °C
  • Easy and secure recalibration (±2 °C)
  • Temperature control precision ± 0.5 °C
  • Heat maintained at a consistent level
  • Heating function indicated by a control lamp
  • Completely submersible (watertight)
  • Features automatic dry run shut-off (Thermo Safety Control)
  • A glass jacket enhances the heating surface and guarantees optimal, even heat distribution
  • Convenient cable length of approximately 170 cm
  • Includes double suction cup holder
  • 9 sizes available for aquariums ranging from 20 to 1000 liters
  • Suitable for both freshwater and marine environments
  • Precision, user-friendliness, quality, and safety “Made in Germany”

The EHEIM aquarium heater is an advancement of the iconic heating rod. The temperature can be set with precision between 18 and 34 °C and can be recalibrated if necessary (±2°). It maintains a constant temperature level, and its heating function is signaled by a control lamp. The rod is fully watertight, can be completely submerged, and includes an automatic dry run shut-off feature (Thermo Safety Control), making it suitable for both freshwater and saltwater aquariums.

One of the most significant innovations is the glass jacket:

  • It expands the heating surface,
  • Concentrates the heat to ensure optimal, even heat distribution, and
  • Acts as a heat shield (safe for your aquatic life).

This jacket is made from specialized laboratory glass, designed for research applications. Therefore, it is free from harmful substances that could leach into the water. It is resistant to both chemical and biological agents, free from fissures or fine cracks that could allow moisture to seep in. Even extreme temperature fluctuations that may occur during water changes will not damage this 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: 52965972966

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4.2 ★★★★★
Based on 19 reviews
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Amazon Customer
Waukegan, US
★★★★★ 5
Great for dog self play
Size: 6 Inch, Color: Red, Size: 6 Inch, Color: Red
So much fun for my puppy. Easy to grab and throw for him to play alone. Durable for a medium dog. This is his favorite toy. I also bought one for my friends cattle dog puppy who went bonkers with it. Yet her dog liked to chew the tags off. So I wouldn’t recommend for chewers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
D
Verified Purchase
Dawn L
Natrona Heights, US
★★★★★ 5
Fun to fetch
Size: 5 Inch, Color: Red, Size: 5 Inch, Color: Red
Perfect size for my 1 yr old Cavapoo that is ball obsessed. This ball is fun to toss around in the yard to exercise and wear out my energetic boy. Perfect for after my work day when I don’t have the energy to match his energy level. He gets to run and chase and I can enjoy his playtime too. Overall the ball is durable and I have confidence it will last for a very long time. We have 2 sizes, small and medium, for my 30 pound athletic pup. He enjoys both equally.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
B
Verified Purchase
brownie2009
Draper, US
★★★★★ 5
Dog loves them
Size: 6 Inch, Color: Independence Day
My dog loved the first ball I got her, so I got her a second one. Both hhavr been very durable (she likes to puncture things with her teeth). I left each ball slightly deflated, so they were still firm, but she could bite them without issues. She has not punctured either ball yet. I did have to watch her because she started trying to chew the tabs off because she was bored. She has not chewed one off, just started thinking about it, and did a tiny bit of damage to one tab. She loves these balls. We have played tug of wat with them too, so yhe tabs are sturdy, and so is the ball. The dog did not care what collar she got, so I grabbed the least expensive one, and the 6 inch. She is a medium sized dog with razor teeth, and these work great.
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Reviewed in the United States on March 15, 2026
R
Verified Purchase
Russell Taft
Cuba, US
★★★★★ 4
Not recommended for the aggressive player..
Size: 6 Inch, Color: Red, Size: 6 Inch, Color: Red
First this ball was not delivered when it should have been. Second, the tabs are poorly made. One day of my dog playing with it and the tabs are already torn up. The ball itself is fun for her and has not deflated for now at least.
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Reviewed in the United States on May 10, 2026
S
Verified Purchase
Stacey Prunty
Lexington, US
★★★★★ 5
Good toy for dogs
Size: Large Size 3, Color: White-Blue
Bought this for our husky. Thought it would be bigger but it’s a good size for her. She has not managed to tear it apart after having it for a few months.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026

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