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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4.4 ★★★★★
Based on 5 reviews
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Dina k.
Houston, US
★★★★★ 1
The way they fold they scratch inside
Style: Chic Metal Rectangular Shield, Color: Rose Gold & Rose
The way they fold over they scratch the surface
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
M
Verified Purchase
Manu
Omaha, US
★★★★★ 3
Look good
Style: Chic Metal Rectangular Shield, Color: Gold
Only 3 stars because they came with no case, just a soft bag. They look good though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 10, 2024
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Verified Purchase
WARE
Battle Creek, US
★★★★★ 4
Nice Style!
Style: Chic Metal Rectangular Shield, Color: Gold
I had a pair of these years ago, and they were gold trimmed. The gold trim was around the outer frame of the glasses, and I really liked them and got many compliments on them. Those became scratched, and I was unable to use them so I did a quick search to find them again. These come and gold are rose, gold trim, and I ordered a pair of each expecting what I had before. I was sad to see that the quality didn’t seem to match what I had before, and the trim was on the inside instead of the outside, which I don’t understand. I also noticed that the ware seems to get looser the more times I wear them. They are harder to keep on my ears.
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Reviewed in the United States on October 30, 2024
M
Verified Purchase
Markus S.
Port Orchard, US
★★★★★ 5
Comfortable and Cute
Style: Chic Metal Rectangular Shield, Color: Rose Gold & Rose
Very comfortable and doesn't slide down my nose. Got several compliments while I was on vacation. Even after wearing most of the day they didn't hurt my ears.
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Reviewed in the United States on June 17, 2023
E
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Estia
Bozeman, US
★★★★★ 5
beautiful draping and forgiving
Size: X-Large, Color: Navy Polka Dot
A beautiful dress. Well made. Fully lined. I don't know what they mean by front slit. There's no slit unless they meant there's a waist line. Fitted but true to size. There's a side zipper that helps get in and out of the dress. There's also a corset in the back that pulls any slack. I'm 5'5" and weigh 185 lbs. It's ankle length. The Drop makes good dresses. I bought the Crimson too and it's a beautiful red that makes everyone turn and gaze. There's another dress the Drop makes which is polka dot and same version in ivory. Beautiful draping and forgiving. I found these dresses when viewed at emanuela.moss@tiktok.
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Reviewed in the United States on August 5, 2025

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