Rock solid product By Adam on 9/5/2015
Adam would recommend this product to a friend
These heaters work amazingly well and the built-in controller is really pretty good at not bouncing on the threshold all day (which shortens the life of the unit). I have double insurance in place with these plugged into my Apex, but could not be happier with the high quality of these heaters.
Great for the Price By Sterling on 7/23/2015
Sterling would recommend this product to a friend
Luckily this heater is able to be calibrated. After watching it closely for a few days, calibrating accordingly, it heats to the correct temperature and keeps it that way.
The only one I use... By Evan on 7/18/2015
Evan would recommend this product to a friend
The Eheim heaters are the only ones I use nowadays, from freshwater and reef tanks to quarantine and mixing the bucket. I've never had a break or failure.
One word of caution: make sure you check the size before you buy! I've found these tend to run a bit large for the wattage compared to other brands.
Great Heater By Mark on 5/3/2015
Mark would recommend this product to a friend
Bought a heater from a big box pet store to get my by while I waited for my Eheim heater to come in. The other heater I could never get to balance properly however the Eheim after one calibration is spot on and works like a charm. Thanks Eheim for making a quality product.
Perfect By Joshua on 4/25/2015
Joshua would recommend this product to a friend
have this on my saltmix tank so temp is perfect to my display makes for fast and easy water change without having to wait for temp to equal works great
Not the eheim I remember.. By Wylderhoads on 4/4/2015
Wylderhoads wouldn't recommend this product to a friend
I bought 2 of these 100 watters for my sump. I've always used eheim products, but this time was different. My DP was at 79F when I put the heaters in, both set to 77 on their thermostats, and they both turned on (actively heating) when I plugged them in. An hour later, they were STILL on heating the water to around 85F. So, it seems like the thermostat in BOTH of them just doesn't work. I bought a finnex heater and synced it up to an apex controller, and will never look back.
Heats well By Martha on 3/29/2015
Martha would recommend this product to a friend
This was a reasonably priced heater, purchased for my 180 gallon aquarium. It does heat well, however we do spend a lot of time watching and adjusting the heat. We do have it on a timer as well.
good heater By aquanut on 3/14/2015
aquanut would recommend this product to a friend
Quality heater at a reasonable price.
Excellent temp control By Miguel on 1/28/2015
Miguel would recommend this product to a friend
I have 250 w to my 120 g tank, work excllent, great temperature control
The Honda civic of the reefing world. By Brian on 1/23/2015
Brian would recommend this product to a friend
I run about 450w of total heat in my 120g sps system. I have two plugged into my apex and have had no issues so far with either. I have two more in the basement keeping my salt mix warm. Great trustworthy simple devices.
Reliable Heater By Dieter on 1/11/2015
Dieter would recommend this product to a friend
I have the 300 watt heater for my 120 gallon reef tank. I find it to be accurate and reliable. Simple to use and a good product. Costs about $20 less here than at my LFS.
Good heater, good price By Bruce on 1/1/2015
Bruce would recommend this product to a friend
Use 50w in some 10g tanks I use for saltwater nursery tanks and quarantine. Holds temp steady well and have not had any issues so far. Have some other Jager heaters that are going on 10yrs now and still fine.