- HMX-S Heater w/ Digital Controller - Finnex (DISCONTINUED)
Heaters are by far one of the most important pieces of equipment on any reef tank. Finnex has been making high quality, compact electric, titanium heaters for years and allow you to create a safe and very stable temperature within the tank. The titanium body of the HMX-S heater is virtually unbreakable unlike glass heaters and are corrosion resistant.
The new and improved controller on the HMX-S series has been modernized, with a touchpad control interface, and a crisp LCD display, allowing you to know the temperature of your tank at a glance from across the room.
All HMX-S heaters now include a plastic guard to cover the heating element portion of the heater. That will help keep any equipment or livestock from coming into contact with the element and overall making a much safer environment within the tank.
Finnex HMX-S heaters come with an attached digital, touchpad controller that will allow you to precisely set the temperature within your aquarium. These heaters are great for fresh or saltwater aquariums that require a stable, and safe heating system. The HMX-S heaters will keep the temperature within a range of +/- 2 degrees from the set point and with the heating indicating LED you will know when the heater is producing heat or not. Additionally, Finnex digital heaters are equipped with memory. so in the event there is a power outage, your heater will resume your preset temperature settings at start up. Please note that the digital display reads in Fahrenheit.
Finnex HMX-S Heater Comparison Chart
|Model||Wattage||Amp||Control Range||Tank Size||Overall Length|
|HMX-S 50||50||.45||68 - 92 degrees||5 - 20 gal||5.75 inch|
|HMX-S 100||100||.9||68 - 92 degrees||21 - 30 gal||6.75 inch|
|HMX-S 150||150||1.35||68 - 92 degrees||31 - 60 gal||8.0 inch|
|HMX-S 200||200||1.8||68 - 92 degrees||61 - 80 gal||10.75 inch|
|HMX-S 300||300||2.7||68 - 92 degrees||81 - 100 gal||12.0 inch|
|HMX-S 500||500||4.5||68 - 92 degrees||101 - 120 gal||15 inch|
Finnex hmx 200 By Matthew on 1/24/2019Matthew wouldn't recommend this product to a friendThis model is absolute crap won't maintain temperature at all it's about five degrees off despite turning it up would not ever by one of these again
Works great for me. By jason on 11/2/2018jason would recommend this product to a friendI like the built in controller. I've never had the problems with temp accuracy like people are describing here. I am running it through an Inkbird controller now, just for peace of mind, but I would do this with any heater regardless of quality. I was using one to heat a 135g display with 35 gallon sump just fine, but I added a second for redundancy, because all heaters eventually fail. I have 3 of these and personally I like them better than the eheim Jager.
Good buy By Johnson JC on 10/19/2018Johnson JC would recommend this product to a friendI've been using the 300 watt heater on my 40g breeder for a few months, so far it's been accurate and problem free.
I need to order a few for my acclimation tanks.
works great By jerry on 8/24/2018jerry would recommend this product to a friendI have 4 of them now . two of them are about 3 years old and work perfect . I have been using 2 in the aquarium and the others are for heating saltwater for water changes . clean water and tank water match up every time
Not a great heater By Joshua on 3/4/2018Joshua wouldn't recommend this product to a friendBesides what's already been mentioned several times regarding the temperature readings...I cannot adjust mine (probably faulty).
BRS is full of it, this is JUNK! By Taylor on 1/10/2018Taylor wouldn't recommend this product to a friendI placed a new 300w in a 75g tank and set to 79f. After 72 hours, the tank still wont get above 76.2f. It is placed in the sump next to a varios 6 turned to max (roughly 1000gph after head loss), so there is plenty of flow. The heater keeps shutting off because the senor thinks its warm enough. I had to up the temp to 84f on the controller to get it to 78.6. I left it that way for 24 hours then retunred the heater to 79f and it dropped the tank back to 76. This is the last time I listen to BRS instead of the reviews.
Works well despite the temperature accuracy By Pixel Reef on 12/22/2017Pixel Reef would recommend this product to a friendAs many have stated, it is off by many degrees. However, I have an Apex and a traceable thermometer so I can accurately set the range to compensate for the heater issue. I have been running 4 heaters (2 in sump, 1 in qt, and 1 in mixing tank) with no issues. Keeps the water temp dead on. They should definitely fix the issue, but in the end, not that big of a deal if you have the proper tools to check them by.
NOT ACCURATE and would not hold temp By chuck on 12/20/2017chuck wouldn't recommend this product to a friendNOT ACCURATE would not buy again 4 degf off and 2 degf diedband. i thought my tank was at 77 but was at 73. 34 gal tank stay away....
DOES NOT STAND UP TO HYPE By (Murphys Reefing) on YouTube on 7/2/2017(Murphys Reefing) on YouTube wouldn't recommend this product to a friendNOT ACCURATE. I installed a larger one on my 90 gallon set up. I have the controller set at 84 degrees to keep the tank 78 degrees. Hope this helps someone
Internal Duty Cycle By Carl on 2/25/2017Carl wouldn't recommend this product to a friendLike others have stated, I too have a 2-3 degree difference between tank temp and heater set temp. I called Finnex and was told that the 150 watt heater is not big enough for an open top 40 gallon tank. After plugging it in to an Apex and manually selecting the outlet on, I can see from the current draw that this heater turns on and off on its own every couple of minutes. It looks like the heater actually heats maybe 50% of the time.
It takes several hours to heat a 5 gallon bucket of water from 60 to 75 degrees. So, overall.. if you do buy this heater make sure it is way oversized for the application.
Junk By spiraling on 2/20/2017spiraling wouldn't recommend this product to a friendI bought 3 of these at the Back Friday sale. Just now setting up the tank. I've used several brands of heaters and wanted to try the finnex titanium. The first heater fried the controller within 1 minute. The second heater is over 4 degrees off. The cord from the heater to the controller is pretty short so its hard to get it away from water, but the controller does not look at all water proof, and that is unacceptable around a tank. Complete waste of money. I'll get something better for my reef.
Do not buy By Edward on 2/11/2017Edward wouldn't recommend this product to a friendI read good things about Finnex, but this model is junk. The thermostat doesn't seem to work. It stays between 78-79, but my Apex says 74-77. So it is up to 4 degrees off, but also, when the Apex thinks that temp goes up 3 degrees, the Finnex thinks it has only gone up one degree. My tank buddy bought the same heater and had the same problems. Now, I see the reviews about this model and wish I had done a little more research.
Can these heaters be recalibrated?
The HMX-s heaters cannot be calibrated, however if you ever do notice their temperature is off, just use it as a reference. In all honesty depending on what your reference for temperature is, the heaters are usually pretty accurate within a degree or two.
Hello. Does the display just show the setting, or does it also show the actual temp of the water? In either case, how accurate is the display? (My current heater is set to 75 but the actual temp on two different digital thermometers is 77.)
Lastly, is the display pad waterproof?
The Display will be used to set the ideal temp, after a few seconds it will display the actual tank temperature. The display will be +- 2 degrees. Teh display is not water proof and will need to be placed with care. This is slightly water resistant but not proof.
Is the LED display on these heaters water resistant? I had an older version of this heater, and it died after only a few weeks. Was told it was water damage to the controller, which was sitting on the side of my sump.
This will have a plastic cover and may be able to prevent small splashes however this is not designed to be water resistant and if water is left on it or creeps through the connection will cause damage.
What wattage is recommended for 100 gallon tank
we recommend 2.5-5 watts per gallons. 250-500 watt heater depending on the background temperature of the room.