Finnex Temperature Controller Digital Heater

After years of submersible heaters with internal thermostats fail on me (multiple brands), I decided to spend the extra money to go with a heater controller and a titanium heater. Bottom line, it is worth the money to have a separate controller. I have tried the Jalli and the Finnex Digital contorllers and would recommend both. The advantage of the Finnex HC-810M is that it not only maintains the temperature to your set point but also displays the actual temperature and allows you to set high and low temperature alarm points. My first thought on the alarm points was that it made sense for the low point in case your heater failed but thought that a high alarm really didn't make much sense because the controller shouldn't allow the heater to heat up to that point unless the controller wasn't working. I later found out that the high alarm was helpful because I had a pump that started to heat the water up to the high limit. The heater wasn't on because the controller was working perfectly and the controller told me that there was a problem. Another thing to note, if you have had the same problems I've had with the regular submersible heaters, you don't have to throw away the heaters that are stuck on. You can use the heater controller with any heater as long as it doesn't exceed the rated wattage. If it has a thermostat of its own and you prefer to use the controller, just set the heater to the max temp. The only thing I would like for an improvement would be to have memory for the setpoints since you have to reset everything if you ever have a power outage or unplug it.

UPDATE: Apparently they did add memory for setpoints now.

Summary:

More reliable that a regular submersible heater w/internal thermostat

Has a built in digital themometer

High and low temperature alarms

Works with any heater that doesn't exceed the rated wattage

This product works very well. The set up instructions seemed very unclear to me. I finally managed to set the temperature I wanted but could not get the hi and lo settings figured out. The one glaring problem with this controller is the temp probe is about 3 ft too short. Why they skimped on this I don't know. I have another heater with remote controller and the sensor probe wire is 3 to 4 ft long. Then you can remote mount the controller away from the tank. The Finnex controller is so short you have to put the probe near the top of your tank and then the controller barely makes it to the bottom tank line. This is on a small 50 gal tank too. Ridiculous in my opinion.

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It keeps my tank temp very stable and I don't worry about over heating! Would definitely recommend and/or buy again.

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easy to use getting started was hard the diricetion helps but my son had alittle time understanding i had tohelp hun set it up

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Bought this product back in june it lasted me 2 weeks in my sump until i noticed this strange feeling when i was changing water. i soon found out that feeling was getting some electrical pulses. at first i was confused as to why i was getting it. the probe should be water proof. after unplugging things one by one and still getting that hair raising feeling. finally controller cut off and unplugged no more electrical shock. initially i figured hey i got a bad product no big deal.( well it was a big deal getting electricuted lol) id just write the company. to this day they have ignored my 2 emails and i still have a brokent heat controller. just had to deal with 2 temperature controlled heaters. i wouldnt take the gamble if i were you

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