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Cobalt Aquatics Neo-Therm Submersible Heater

Cobalt Aquatics Neo-Therm Submersible Heater
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Quick Overview

Fully submersible, flat design, aquarium heater from Cobalt Aquatics.

  • Easy to set "One Touch" control

  • Advanced electronic thermostat - Accurate to ±0.5ºF

  • LED Display - shows the Set Temp and Tank Temp simultaneously

  • Set temperature range from 66ºF up to 96ºF

  • Safety features



BulkReefSupply.com is an Authorized Retailer for Cobalt Aquatics products. Cobalt Aquatics products purchased through our website are new and covered under any warranty throught Cobalt Aquatics.



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  • Quick Overview
Fully submersible, flat design, aquarium heater from Cobalt Aquatics.
  • Easy to set "One Touch" control
  • Advanced electronic thermostat - Accurate to ±0.5ºF
  • LED Display - shows the Set Temp and Tank Temp simultaneously
  • Set temperature range from 66ºF up to 96ºF
  • Safety features

BulkReefSupply.com is an Authorized Retailer for Cobalt Aquatics products. Cobalt Aquatics products purchased through our website are new and covered under any warranty throught Cobalt Aquatics.More

Cobalt Aquatics Neo-Therm Submersible Heater

61% Recommend this to a friend (20 of 33)

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25W Neo-Therm Submersible Heater
SKU: 207705
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50W Neo-Therm Submersible Heater
SKU: 207706
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75W Neo-Therm Submersible Heater
SKU: 207707
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100W Neo-Therm Submersible Heater
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$62.99
 
 
150W Neo-Therm Submersible Heater
SKU: 207709
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200W Neo-Therm Submersible Heater
SKU: 207710
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Previously Asked Questions

  • by James on February 4, 2014, @11:09 AM

    Will this heater shut off if it is not all of the way in the water? When doing water changes on my solana, the area that the heater will go in will be out of the water for a few minuets

    Bulk Reef Supply Hi James,
    It won't shut itself off (I don't know of any heater that would). You will want to unplug it before its removed from water (or if you have an aquarium controller you setup something like a feed mode to shut down your pumps, heaters, etc at the press of a button for when you do a water change).

    Do you find this question helpful?  Yes   No

  • by Nick James on January 16, 2014, @9:50 AM

    I am in the process of setting up a 40 gallon hex reef tank, and would like to get a recommendation for a heater. I am not wanting to get the latest and greatest model. Just something reliable and not glass.

    Thanks!

    Bulk Reef Supply Hey Nick,
    Most of us around here use the Neo-therm but the second most popular has to be the finnex HMO series heaters. Assuming you don't have an aquarium controller yet I would get something that has a digital thermostat as they are a lot less likely to fail (in particular in the ON position).

    Do you find this question helpful?  Yes   No

  • by Debbie on March 31, 2014, @3:04 AM

    Is there a calculator that helps you determine what sized heater I need for each of my tanks?

    Bulk Reef Supply Hey Debbie,
    There isn't a calculator as each heater is a bit different, but all of the manufacturers do have recomended size aquariums for their heaters. If you look at the full details of this page there is a quick comparison chart to help you match the heater size to how big your aquarium is.

    Do you find this question helpful?  Yes   No

  • by Tom Kinakin on January 20, 2014, @3:04 AM

    I'm just waiting on the Apex gold to come out. I want to put an 85 gal coral frag/semi show tank together. With the Apex , can I run two cobalts in tandem or do i need a bigger heater than the biggest Cobalt Neo therm? I think its only good to 55 gallons . Plus I have the sump volume aswell do factor in.

    Bulk Reef Supply Hey Tom,
    I think they should be here this week :-) The different outlets have different amperage allotments but in general unless you are using two very large heaters your not going to run into any issues :-) Just for example, the 8amp outlet would be able to power about a total of 950watts. Should be way more then plenty for a 55g tank!

    Do you find this question helpful?  Yes   No

  • by Sloan on February 8, 2014, @9:04 PM

    I have a 10 gallon tank right now. I also have plans in the future to expand my tank size to around 20-30 gallons in the future. If I buy the 100 watt heater now and put it in my ten gallon tank with the idea of using this same heater in the future would it be complete overkill? Would putting in this high watt output heater be detrimental on the 10 gallon tank?

    Bulk Reef Supply Hi Sloan,
    Thats not a problem at all. If the heater is larger it just won't run for as long, nothing to worry about!

    Do you find this question helpful?  Yes   No

  • by Nick on April 11, 2014, @6:27 AM

    Once the temperature is set, if my Apex unit cuts power to the outlet (temp gets out of range) does the heater remember the last set temp or does it reset to a default? If it is a default, what is it?

    Bulk Reef Supply Hey Nick,
    The heater should remember the tem, but that said with a setup like this what you would want to do is set your heater for your desired temp (say 78 degrees) and then set your Apex as an emergency cutoff to cut the power if the temp gets too hot and it appears the heater has failed (say 79.5 degrees). That way the heater is in primary control and you will avoid constantly cutting power to and from it (which may be hard on the heater).

    Do you find this question helpful?  Yes   No

Full Details

Safety Features - integrated thermal protection circuitry shuts the heater down before it can overheat. Outer casing is shatterproof making the NEO-therms virtually indestructible. Use for freshwater and saltwater aquariums and terrariums.


Correct heater position- Vertical with heating element down, bezel, cord and button up.

  • Minimum water level - Top of the bezel.
  • For 25, 50, 75 Watt - 5.5" from bottom of the heater
  • For 100 Watt - 8.75" from bottom of the heater
  • Maximum depth of 31.5" deep at the bezel

Quick Compare - Cobalt Neo-Therm Submersible Aquarium Heaters

Model No. Maximum Aquarium Size Dimensions
25W 6 Gallons 6 1/2" L x 2 1/8" W x 4/5" Thick at Bezel
50W 12 Gallons 6 1/2" L x 2 1/8" W x 4/5" Thick at Bezel
75W 20 Gallons 6 1/2" L x 2 1/8" W x 4/5" Thick at Bezel
100W 29 Gallons 9 3/4" x 2 1/8" x 4/5" Thick at Bezel
150W 40 Gallons 10 7/8" x 2 1/8" x 4/5" Thick at Bezel
200W 55 Gallons 10 7/8" x 2 1/8" x 4/5" Thick at Bezel

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Reviews

Items 1 to 12 of 33 total

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  • Stopped Working By Aron on 4/25/2015

    Heater stopped working after about a year, luckily the apex alarm went off as the temperature was falling and allowed me to put in a backup heater to save everything. When it was working properly it was a nice heater...not sure if the 200W was true because didn't perform like my other 200W heaters.
  • Great! By Tony on 4/11/2015

    I started out buying a 75watt (from a different store), and keeping the setting at 78 degrees in my sump, water stays at 77.4-77.8.

    I have recently ordered a 150w from BRS for in my display tank. My experience with the 75w i would expect nothing less then a great product from the 150w.
  • Waiting on quality control. By Turf on 4/9/2015

    Used this heater for just over a year. I love the concept but the heater stopped working right after the warranty went out - bought in late 2013. If I found out that they had improved the component quality I'd buy one again.
  • Amazing for nano tank By Mike on 3/29/2015

    I have this on my bio cube and it fits perfectly in the back chamber the low-profile give me great room for filter media. I've had it running continuously for around eight months now with zero issues been able to keep constant temperature of 78 which I've checked with secondary thermometers on my apex unit
  • Malfunctioned after a month....May have had a lemon. By Chris on 3/27/2015

    I had the 75w for a 20 gal frag tank. Kept it set at 80 deg which kept the tank around 78.5 deg for about a month. Came home one night to find my acros in serious distress. Tank temp was 70 deg. There had not been a power outage. Heater was still set at 80 deg. Put the acros in my DT. Unplugged and plugged the heater in and reset it to 80 deg. Water came up to about 79 degrees that night. Came home the next night and the tank temp was 72 deg. I won't use this heater any more.
  • Avoid By Paul on 3/23/2015

    Nothing here warrants the price of these heaters. The shape is convenient for a sump. They are reasonably accurate. I have owner three and none have lasted more than 24 months. Each has gone with an audible pop and the acrid smell of burning insulation. One of the three tripped the GFCI. None were kept full submersed.
  • Good but expensive and weak By Patrick of Bay Area Coral on 3/16/2015

    I purchased the 150W on NOVEMBER 22, 2014 and have been using it since. I sleek design and digital temperature sensor is great, but it was not enough to keep my 50 gallon aquarium warm during winter. I had to supplement with another 150w heater. I am looking forward to the new line of 300w+ dual heaters!
  • Fried my corals By Chris on 2/9/2015

    This heater worked great for the first six months or so but then I came downstairs one morning to find my anemones, corals, and clam in obvious distress. Put my hand in the water and got a serious shock. The bottom seam of this heater had split and was electrifying my livestock. Managed to save about half of them, but will stay far away from these in the future.
  • Blew up! By Flannigan on 2/8/2015

    I had the 200 watt heater and thought it was great for the first six months of use, until it blew up in my sump. Five minutes after I got home from work, I heard a loud band, like a firecracker. I wasn't sure what it was until I noticed my dogs smelling the fish tank stand. I walked over to the tank and started smelling a very bad burning plastic/electrical smell. By the time I got to the tank, so much smoke was around it. I opened up the cabinet to see the the heater had blown up and was bubbling smoke into the water. I quickly unplugged the heater and opened all my windows and doors. There was so much smoke, I could barely see anything in the cabinet. On top of that, the heater released a gooey black tar like substance into the tank that was next to impossible to clean up. If i wasn't home, my whole house would have filled up with toxic smoke and possibly made my dogs sick or something. This was my experience and have noticed from internet searches that I'm not alone. Think twice before getting one of these.
  • works great so far By Nate on 1/31/2015

    Have had it about a month and it's keeping a constant temp. I'll repost if anything changes.
  • Nice Heater By RNMIke on 1/21/2015

    So far, I really like this heater. It works well, and I'm happy I'm not adding a glass tube to my tank. It seems nearly impossible to break this thing. I gave 4 stars because the temp numbers are a bit off on the thermometer dial. I have the dial set to 76 degrees, and the tank is staying at a rock solid 77.6.
  • works great By walter on 1/2/2015

    A slim design and it fits nicely in the back of the tank. Keeps the temp steady, no complaints other than price

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