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Eheim Jager 300-Watt Aquarium Thermostat Heater

$25
$34.99
+ Free S/H on $49+
+32 Deal Score
24,642 Views
Chewy.com has Eheim Jager Aquarium Thermostat Heater on sale starting at $24.99. Shipping is free on $49+ orders.

Thanks to community member blobber for finding this deal.

Available:Amazon has Eheim Jager Aquarium Thermostat Heater on sale starting at $24.99. Shipping is free with Prime or on $25+ orders.

Available:About this product:
  • Fully submersible
  • Thermo safey control protects against running dry
  • Will automatically turn off when water level dips too low
  • TruTemp dial recalibrates the heater for precise temperature regulation
  • Made of shock resistant and shatter proof glass for fresh or marine water
  • On/Off indicator light for at-a-glance monitoring
No longer available:

Editor's Notes & Price Research

Written by
  • About this deal:
    • This deal for the 100-Watt model is $15 off (50% savings) the retail list price of $29.99.
    • Our research indicates that this offer is $5.80 lower (27.9% savings) than the next best available price from a reputable merchant with prices starting from $20.79 and higher.
  • Ratings & Reviews:
    • This product has an impressive 4.6 out 5 star rating based on over 518 customer reviews on Amazon.
  • About this store:

Original Post

Written by
Edited August 30, 2021 at 07:59 AM by
Cheapest prices in many years on some sizes of the Eheim heaters, according to Camelcamelcamel.Depending on who you talk with, these may or may not be the best available although they've long been considered best or among the best. Take the reviews of any aquarium heater with a grain of salt since every heater with more than a couple reviews includes stories of fried fish. A factor to consider is that tiny cracks in the heater will cause water leaks and electricity flowing out into the tank.

Out of the various brands that I've tried, my Eheim and Fluval heaters have been the most reliable. This includes heaters that I've purchased within the last several years. Part of the reliability factor for me is that these didn't crack (and then leak) as easily as some of the cheaper options out there.

They're not bulletproof, but they do seem to be more forgiving when you forget to unplug immediately while changing water or accidentally bump against a decoration. Keep in mind that if you do knowingly or unknowingly create those tiny cracks in your heater, you will be very likely to have your own fried fish story to blame on your heater.



https://smile.amazon.com/gp/produ...=UTF8&th=1
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Created 08-14-2021 at 05:04 PM by blobber
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Joined Sep 2012
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> bubble2 317 Posts
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BCNugget
08-14-2021 at 05:15 PM.
08-14-2021 at 05:15 PM.
Hmm I do see some guides on how to use one of these and some pvc to make an inline heater. That would save some money. Because in-lines are expensive. But I've got a canister filter there is no reason I should have to see heater.
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Joined Jan 2011
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GreatnessInOne
08-14-2021 at 08:02 PM.
08-14-2021 at 08:02 PM.
Thanks! Needed heater for setting up my 40 gallon!
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Joined Dec 2014
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> bubble2 1,642 Posts
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aquaelvis
08-14-2021 at 08:21 PM.
08-14-2021 at 08:21 PM.
https://www.amazon.com/dp/B003SNU...UTF8&psc=1
100W is $14.99, lowest ever per the camel.
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Joined Apr 2006
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> bubble2 2,317 Posts
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duijver
08-14-2021 at 08:47 PM.
08-14-2021 at 08:47 PM.
rough reviews. I have had success in the past... so bought a couple for back-ups.

You should always have a controller to protect against cooking fish anyway... so not as worried about some of the negatives.
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Joined Nov 2010
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> bubble2 93 Posts
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Original Poster
blobber
08-14-2021 at 09:45 PM.
08-14-2021 at 09:45 PM.
Quote from aquaelvis :
https://www.amazon.com/dp/B003SNU...UTF8&psc=1
100W is $14.99, lowest ever per the camel.
Nice call. I didn't see it on the main product page so I missed missed it when creating the original post.

Updated with link to the 100 watt model.
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Joined Mar 2009
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> bubble2 2,478 Posts
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dreamliner77
08-14-2021 at 09:54 PM.
08-14-2021 at 09:54 PM.
Thanks! Been looking for a replacement for my second failed Aqueon Pro. The first one was replaced under warranty, they don't warranty their replacements.
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woopow
08-14-2021 at 10:22 PM.
08-14-2021 at 10:22 PM.
I doubt that the brand is any better than the any of the others, heater technology is really simple, but at this price it's cheaper than some of the no name brands on Amazon so i'll give it a go.
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Joined Dec 2014
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> bubble2 1,642 Posts
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aquaelvis
08-15-2021 at 05:17 AM.
08-15-2021 at 05:17 AM.
Quote from blobber :
Nice call. I didn't see it on the main product page so I missed missed it when creating the original post.

Updated with link to the 100 watt model.

Yeah, I only found it because I was searching the camel to see the price history on these. The 100 watt came up there. It id weird it's not on the same Amazon page.
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Joined Nov 2012
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> bubble2 269 Posts
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ShellFire
08-15-2021 at 05:25 AM.
08-15-2021 at 05:25 AM.
In for two. I use an Inkbird controller with all my heaters, Thanks OP
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Joined Nov 2010
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> bubble2 93 Posts
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Original Poster
blobber
08-15-2021 at 07:52 AM.
08-15-2021 at 07:52 AM.
Quote from woopow :
I doubt that the brand is any better than the any of the others, heater technology is really simple, but at this price it's cheaper than some of the no name brands on Amazon so i'll give it a go.

I'm convinced these are harder to break than the majority of (or maybe all) others. They're not as user friendly as the digital options but they're like the basic old school product that we all mention when stuff breaks ( "they don't make them like they used to"). For this reason, I've had a camel alert for this specific model for several years. I have a few of these that I've been using for quite a while, some newer and some older but the quality seems consistent with all. In my experience, my Eheim heaters have been more resilient to little things that are bound to happen like getting bumped or forgetting to unplug BEFORE removing water (for a short time!). I'm sure they'll break like the others eventually but these just seem to be a bit tougher which is why I've been watching for a deal.

The main difference with these seems to be thicker glass than with most other options. Maybe there's something else that's helping to differentiate them too. With the same or less abuse to other brands, my heaters shattered/leaked/died.

There must be others out there that someone would say similar things about, and I'd be happy to know about them. For me, this has been a tough no frills heater.

Just sharing my experience. I'm not affiliated with Eheim or the seller.
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Joined Jul 2019
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> bubble2 10 Posts
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hajime27
08-15-2021 at 10:00 AM.
08-15-2021 at 10:00 AM.
All aquarium heaters will fail, it doesn't matter if its a "good brand" like Eheim or not, the internals/designs are similar. If you don't have a glass shattering problem (which I think is more due to user error in majority of cases), you will eventually find a leak.

These need to be treated as expendible goods, not something that lasts a lifetime. I replace mine every 2-3 years as a precaution. If you have expensive fish, I highly suggest having an external thermostat as a backup.
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Joined Feb 2013
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> bubble2 352 Posts
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ShooterMcGavin_69
08-15-2021 at 10:08 AM.
08-15-2021 at 10:08 AM.
Can I make sous vide with this?
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Joined Feb 2020
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CalmBoundary335
08-15-2021 at 10:48 AM.
08-15-2021 at 10:48 AM.
Quote from blobber :
I'm convinced these are harder to break than the majority of (or maybe all) others. They're not as user friendly as the digital options but they're like the basic old school product that we all mention when stuff breaks ( "they don't make them like they used to"). For this reason, I've had a camel alert for this specific model for several years. I have a few of these that I've been using for quite a while, some newer and some older but the quality seems consistent with all. In my experience, my Eheim heaters have been more resilient to little things that are bound to happen like getting bumped or forgetting to unplug BEFORE removing water (for a short time!). I'm sure they'll break like the others eventually but these just seem to be a bit tougher which is why I've been watching for a deal.

The main difference with these seems to be thicker glass than with most other options. Maybe there's something else that's helping to differentiate them too. With the same or less abuse to other brands, my heaters shattered/leaked/died.

There must be others out there that someone would say similar things about, and I'd be happy to know about them. For me, this has been a tough no frills heater.

Just sharing my experience. I'm not affiliated with Eheim or the seller.

They turn off in low water. Probably helps keep it from braking quite a bit.
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