Hydor ETH 300 In-Line Heater UL 300W f/16mm & 5/8″ Hose

$63.99 $58.23
(as of 31/10/2010 03:43 - info)
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  • Suitable for marine and tropical aquariums
  • Easy to use
  • High precision electronic temperature control
  • For external use
  • 5/8 inch hose

ETH Heaters are the first external heaters for aquariums with the exclusive PTC technology. The self-limiting PTC heating element guarantees maximum safety against any risk of overheating. Designed to be used on return lines coming from canister filters or sumps.

Heaters

5 Reviews

  1. T. Sawasky says:
    Posted February 4, 2010 at 12:00 am | Permalink

    I used this heater on a 50 gallon planted tank running inline with a rena xp3 canister filter. When I switched my tank over to start reef keeping it just didnt seem to work any more. It was only 6 mos old when it croaked. I still have it but haven’t tried it again in a year. I am thinking that my initial reef tank was too small and there was not enough tank volume for it to work properly. I now use a Catalina 500w titanium heater in the sump of my 60 tall reef. I wont buy another one I cant trust its reliability now. I have a 3000.00 reef system and need reliable equipment.

  2. D. Gregg says:
    Posted January 11, 2010 at 12:00 am | Permalink

    I have used this heater for about 2 years with a 50 gallon tank and it worked well until it started leaking. My ground fault circuit kept faulting when I plugged in the heater, and on closer inspection there was a small amount of water leaking from the heater casing which must have caused an internal short.

    I am going to use another one even after this experience because I really like having an external heater for my tank and this is the only one I have found which fits the bill.

    Anyone who doesn’t run on a ground fault circuit I highly recommend one!

  3. Scott Higgins says:
    Posted January 26, 2009 at 12:00 am | Permalink

    This product works great I have a reef tank and I have been runing the heater for about a month now and it holds the temp right on target

    Seller was very fast with the order came in 4 days with 7-10 day shipping That was great…………..Thanks so much for everything!

  4. B. Kramer says:
    Posted November 29, 2007 at 12:00 am | Permalink

    Bigger than I suspected it would be, but it works fabulously. It does have 3/8″ ID connectors which was not convenient for all my other 1/2″ OD stuff so I had to make a trip to the hardware store. Other than that – it’s doing a great job!

  5. L. H. Forbes says:
    Posted January 2, 2007 at 12:00 am | Permalink

    I am a long time fish keeper now specializing in discus. I have owned just about every brand of heater in my over thirty years in the hobby. No heater I have even owned is comparable to this one. It is quite simply far better than any other aquarium heater. Easy to set, accurate, holds temperatures extremely stable. It must be used with a canister filter which I notice the Informational Blurb does not include, but if you run a canister filter on your aquarium this is the one to own.


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