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Hydor ETH 200 In-Line Heater 200 Watt - 1/2 inch

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Hydor USA

ETH 200 In-Line Heater UL Listed 200 Watt for 12mm & 1/2" Hose
External thermal heater which includes the PTC system. Suitable for all external canister filters


The Hydor ETH in-line external heater is designed for vertical use in most aquarium applications involving water hose of the specified diameter. The ETH must be used in a vertical manner for correct operation. The most common application is for use with canister filter, however the ETH is easily adapted for use in almost any situation where heated aquarium water is required, such as with wet/dry sump pumps. The ETH is easily installed by cutting the tubing and connecting the two parts of the tube to each side of the ETH. For reduced maintenance, it is recommended that the ETH be installed within the filter`s output assembly. As most canister filters are not designed to bear weight, it is recommended that the ETH be properly supported by the use of the attached loop to avoid stress on the output assembly. The ETH is completely safe and UL Listed. There is no danger of damage if the ETH is left running dry for short periods as the ETH will switch itself off in that event. The ETH heats with high efficiency by means of an internal heat pump system that avoids temperature variations. For use in freshwater and marine aquariums. Fits most canister filters such as the Hydor Prime, the Rena Filstar, Eheim canisters, and the Fluval canisters with the use of a short section of tubing to complete the connection. Use of the ETH cleaning brush is recommended.

Features:

  • Completely safe.
  • No danger of damage if the equipment is left running without water for a short period of time.
  • Patented heating element made with the exclusive PTC system. The traditional metal resistor coils have been replaced by a special polymer sheet silk- screened with heating ink.
  • Setting of temperature controlled by an electronic circuit with indicator light.
  • Connectors suitable for any flexible pipe of all external filters.
  • Two year manufacturer`s warranty.



Product Manuals & Documentation

Hydor ETH 200 In-Line Heater 200 Watt - 1/2 inch

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

Hydor has been producing a comprehensive range of equipment for aquariums and ponds since 1984 and offers the best in high-technology for the creation of a living ecosystem at home. The factory has developed thanks to the engineering competence of its founder and its continuous growth is based on the investment it has made in research and the development of innovative technical appliances. A competitive and dynamic structure of more than 150 employees regularly engages in the implementation of products which meet the demands of 50 nations and keep pace with the evolution of the world markets. The global quality is not a simple working method but a daily expression of mind.

24 Reviews

SCOTT STOREY from South Pasadena, CA UNITED STAT

11/27/2015

Experience Level: Expert

not great

I had this heater for about 3 months, was perfect during that time-but slowly started to heat the tank higher and higher. I have it set to 78, the tank is 90! Luckily I have discuses, so they were fine in the higher heat, but would not last too long at that temp. I had to un-plug the heater and replace it.

0 out of 8 found this review helpful

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ROBERT BYNUM from COOS BAY, OR UNITED STATES

07/06/2014

Experience Level: Intermediate

Great inline heater

Nice to get the heater out of the main tank when using an external canister filter. Temperature settings on the knob show degrees and they seem to be within a degree or two. Only hick-up was I ordered the Hydor 600 filter and the Hydor 300 watt heater with the largest (5/8") tubing connections but the tubing connections on the heater are too small for the 600 so I had to use a couple of reducing adapters. Did not seem to noticeably reduce flow. Also have another 300 watt with a Hydor 450 filter (5/8" connections) and a 200 watt on a Hydor 250 filter with 1/2" connections. The heaters were bigger than I pictured and barely fit under the tank in the stand with my over-sized canisters but it all worked. They seem to hold the temperature steady within 0.2 degrees in each tank. I have only had them a short while so we will see about longevity.

2 out of 2 found this review helpful

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LAWRENCE FORBES from GRAYSLAKE, IL UNITED STATES

04/16/2013

Experience Level: Expert

Best Heater

I own 10 of these heaters, most being the 300 watt model Over the years I have owned many heaters, NONE of them come close to the accuracy and longevity of the ETH. Some of mine are over 10 years old and still continue to perform as well as the day I got them. If you have a canister filter this is the heater for you.

3 out of 3 found this review helpful

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EDUARDO HERNANDEZ from SLIDELL, LA UNITED STATES

12/27/2012

Experience Level: Intermediate

works great

works great, so far temps have dropped to mid 30s and has been able to keep my 40G sump(set in garage) and 155G display tank temp at 72.Love the fact that I do not have to worry about breaking inside the sump and chocking my tank

2 out of 2 found this review helpful

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ROBERT BOWMAN from WILLIAMSBURG, VA UNITED STATES

09/09/2012

Experience Level: Intermediate

Over 4 years and no problems!

I have had my share of problems with heaters, sticking on and cooking my fish, glass tube cracking or they stop they working. I've lost count of the heaters I've trashed. I bought one the Hydor ETH300s for my 90 gal discus tank over 4 years ago. It has worked flawlessly holding the temp at 83 degrees even in a cold room. I even removed the 300 watt in-tank backup heater year ago. I will say this, take your time setting up the hoses. Don't let the weight of the heater hang on the hoses, I use the hook on the heater so it hangs on the back of the tank.

10 out of 10 found this review helpful

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MATTHEW WATKINS from COLUMBIANA, AL UNITED STATES

06/06/2012

Experience Level: Intermediate

Great!

This is a great heater! It keeps my 30 gallon at a constant 80F with no problems what so ever.

1 out of 1 found this review helpful

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BRIAN SMITH from Conyers, GA UNITED STATES

11/10/2011

Experience Level: Intermediate

Excellent heater

This is my second Hydor in-line heater, I have a 300 watt on my 75 gal planted tank and a 200 watt on my 29 gal planted tank. I chose them because I wanted less equipment visible in the tank. The thermostat on these is much better than the Hydor Theo heaters. The Theo heaters are great from a shatterproof and auto-shutoff-run-dry perspective, but their thermostats are 10+ degrees off. Not so with the Hydor ETH, they're just right!

3 out of 3 found this review helpful

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JASON FELLER from ROCKVILLE, MD UNITED STATES

03/02/2010

Experience Level: Intermediate

great idea

Great idea, works very well.

1 out of 1 found this review helpful

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MICHAEL TOCK from MARQUETTE, MI UNITED STATES

01/14/2010

Experience Level: Expert

Pleased

Quick and easy to install, nessasary for a Stingray tank, no burns. One thought though, I replaced a 150w in tank w/ this 200w inline and the inline cannot keep up with the heat loss, gona switch to the 300w. Double the wattage to do the same work. I'm heating a 150 ga pond to 78F installed in my basement, ambent temp about 65F.

6 out of 8 found this review helpful

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ERIK LUST from BAYSIDE, CA UNITED STATES

01/22/2009

Experience Level: Intermediate

Solid Heater But Not Perfect

This heater was perfect for my application; the only problem I have is that the thermostat is a bit coarse.... if I set it to turn on when the tank is 78 it won't turn off till the tank is around 81 or 82. Luckly, my tank runs at the same temp without a heater almost always so it's not much of an issue. Probably I'll get a temperature controller and run the thing with that.

3 out of 4 found this review helpful

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