SKU: 23659247811

EHEIM thermocontrol 300 heater

Sale price$166.45 Regular price$184.95
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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: 23659247811

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4.4 ★★★★★
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K. Quaintance
Grantham, US
★★★★★ 5
Works Like a Charm!
Style: 2.5" Ball
WoW!! This thing is pretty cool! It can pick the ball up off the ground - and with little effort - It can throw the ball 3X Higher and Further than I ever could! It wont hurt my elbow or wrist ( way better than before when I was wearing myself out ) I don’t know how I ever got along without it!! It's a must have if your dog loves playing ball. :-) Update: I've had this For 7 Months Now- it looks and works Great just like the day I bought it- Thumbs up!
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Reviewed in the United States on September 29, 2024
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Private
Houston, US
★★★★★ 5
Better Design - Better Materials - No Sticking
Style: 2.5" Ball
Been using Chuck-It launchers and plastic balls for a very long time and they were always a little sticky on giving up the ball. This makes it tricky to throw grounders with precision and can overshoot the fence in the backyard. A couple of years ago, Chuck-It changed the material to a stiffer plastic that made this problem more pronounced. I even tried custom sanding the cup to get just the right grip. The Fetch-It launcher (using the Chuck-It plastic balls) uses a three-pronged claw with soft rubbery ends that releases perfect every time. The material costs on this new one are noticeably higher while maintaining a somewhat lower price than the brand name original.
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Reviewed in the United States on January 9, 2026
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Verified Purchase
ninjitsu
Lake Worth, US
★★★★★ 3
Meh
Style: 2.5" Ball
It "works" but it isn't very good. The grip is so loose on the ball, it lets go early and doesn't thrown very far. A Chuckit is so much better, I can get 3x the distance with a 25" Chuckit. This thing is kind of a waste.
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Reviewed in the United States on May 25, 2026
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Jen
Whiting, US
★★★★★ 5
🧦 Simple & Effective – ZenToes Moisturizing Socks Review ✨
Color: Green Gingham & Multi Plaid, Size: Regular
These ZenToes moisturizing socks are such a smart and effective solution for dry, cracked heels! I really like that they only cover the heels instead of the whole foot—no hot, sweaty toes, which is a huge plus. They come in a pack of two, and for the price, it’s a great value. I also found that they fit well and stayed in place overnight. They were a bit snug around my foot, but still comfortable enough to wear. What really impressed me is how well they work. The socks are nice and thick, and after just one use overnight, my heels were noticeably smoother. Even better—the results lasted about a week without needing any extra lotion, which I personally love since I’m not a fan of applying creams. I would definitely buy these again and highly recommend them if you’re looking for an easy, low-maintenance way to keep your heels soft.
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Reviewed in the United States on March 22, 2026
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S Roth
San Leandro, US
★★★★★ 5
They work!!
Color: Fuzzy Slate Gray, Size: Regular, Color: Fuzzy Slate Gray, Size: Regular
I bought these to replace a very old pair that I originally got at Bed Bath and Beyond like 20+ yrs ago, and the fabric was starting to fray. However, the gel pad inside (at the heel) was still working just fine. Anyway, this new set includes 2 pairs, with a gel pad inside each heel area. Results are truly amazing, I kid you not. You can use them without a moisturizer, but I like to put moisturizer on my heels, then wear these overnight, and in the morning my heels are soft, with no dry skin and NO cracks. I like the fact that these are kind of soft and fuzzy (outside), but I LOVE that they leave your toes exposed and cool (because my heels feel kind of warm from the moisturizer and gel pad). They are of good thickness, and I feel they will last a long time (of course remains to be seen). Highly recommend.
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Reviewed in the United States on March 27, 2026

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