Finnex Digital Titanium Aquarium HMH 500S Review

A heater did not switch off properly. I woke up as usual one morning to the faint ringing of the alarm clock and my tank was reading 102. Another probe broke after a few months and now he says he's in his 50's.

Bought this heater on January 17th. My 75 gallon reef tank was fine when I went to bed, but woke up at 5am this morning (July 15) to the smell of burnt fish. My tank was 98 degrees. I lost about $3,000 worth of all my fish and coral. Do not buy this heater! Beware.

This aquarium heater is amazing. Temperature setting is very easy and keeps the temperature within +/- 0.3 of the setting. The sensor is very accurate out of the box, as shown in comparison to my handheld Hanna Checktemp. I didn't have to calibrate it. Update: After a few months of use, the heating stopped working. I set it to 78 degrees Fahrenheit but the temperature in my tank is not increasing but slowly decreasing as you can see in the video. I will try to contact the seller and see if I…

I bought this heater with confidence coming from a well known name like Finnex wow that was wrong to believe. It delivered within the first 30 days of use, needless to say I'm very disappointed with it. I contacted Finnex and after they asked me to send them tons of information and my kidneys were basically just "joking" they sent me a replacement. However, I only received it two days ago and immediately installed it in my reef aquarium. Literally less than 3 hours later it went bad and gave an