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The heater could be laid down in the sump. Under full details the length of each heater is supplied. Feel free to let us know if you have any further questions!
You will want a minimum of 2.5 watts per gallon up to 5 watts per gallon. Overall on a 120 gallon you will need a minimum of 300 watt heater. Feel free to let us know if you have any further questions!
Quick Compare - Eheim Jager TruTemp Aquarium Heaters
|Model No.||Maximum Aquarium Size||Power Consumption||Length|
Quality Heater By Jono on 10/23/2016Jono would recommend this product to a friendThe heater is constructed out of high quality material.
Only thing I buy By Reid on 10/20/2016Reid would recommend this product to a friendOnly heaters I've ever had. I replace them every couple of years since they are relatively inexpensive, but never had a failure.
Awesome Heater! By Jason on 10/11/2016Jason would recommend this product to a friendI've been using these heaters for many years, I keep coming back to what has worked for me over and over again. Can't go wrong with these eheim heaters!
Very Happy with the Product By Ramturbod on 9/26/2016Ramturbod would recommend this product to a friendI have used one in the past in my fresh water tanks and needed a replacement for my FOWLR tank. Great product.
Not as good as before By Ray on 9/2/2016Ray wouldn't recommend this product to a friendEheim is used to be the gold standard in the past for glass heaters but the new one I just bought didn't work properly, it heats up for like 5 minutes and turns off, hopefully I am an edge case.
Would not purchase. By Jorge on 5/10/2016Jorge wouldn't recommend this product to a friendI bought 2 of these guys, and within a week of use, 1 had failed. Eheim sent me 2 replacements. The first one failed and actually burned out an outlet. The second one they sent me had the cable cut. I will never buy Eheim again. View my topic on this matter on reefcentral: http://reefcentral.com/forums/showthread.php?t=2578770
Great heater By John on 5/9/2016John would recommend this product to a friendThis is a great heater. Easy to use. Well built. Would by this one again.
Works but... By Helen on 1/28/2016Helen would recommend this product to a friendI have this heater on a 55 gallon display with a 240 gallon sump (yeah I know...serious overkill). Originally I had a 265 gallon display but when the bottom fell out, the 55 was pressed into service. My tanks are in a converted garage that we euphemistically call the family room. It is very cold in there in the winter. This heater keeps the water warm nicely. My only concern is that it never seems to shut off. Would I recommend it? Time will tell.
not happy with customer service of Eheim products By Frenchy on 11/12/2015Frenchy wouldn't recommend this product to a friendthe heater is not working good, from day one, it's always on. But the problem it's that I called Eheim customer service and I tried about 4 times and every times that you're supposed to get thru and talked to someone, they send you to a voice mail, and you leave a message but they do not have the decency to return your calls. Eheim it's not worth a penny
Rock solid product By Adam on 9/5/2015Adam would recommend this product to a friendThese 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 7/23/2015Sterling would recommend this product to a friendLuckily 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 7/18/2015Evan would recommend this product to a friendThe 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.