Light comes on occasionally but water temp is less than 72 degs. Tried several different test thr thermostat inside is set to somewhere around 68 not 78 like its suppose too! I have the 20 gal tank one

The box says it has an app… that is false it hasn’t been available on the App Store since August 15, 2023. I bought this January 2025. (Please take it off ur box) thanks

None of them broke or stuck. Steady 78f in my reef tanks.

I bought mine today notice it indicates red but doesn’t last long on it then turns to green seems to stay in that color. Wondering if thats normal cause its not heating my tank.

Bought this 2 days ago then I heard people are buying two of them, no thanks.

I've had my first tetra heater for 10 haply years in my 10gallons. Upgraded tank to bigger one and figured id get the same model as the first one since it wasn't up for it. I set it up and didn't stress much about the fact it took a long time to get the tank to set temp. Day 2 i Noticed it looked humid inside but google mentioned it was normal. Today my most my precious fish are dead. They basically boiled. I removed my air stone and saw the heater leaks tiny bubbles. not only the amount of money gone just like that but i watch thos fish grew and got attached to them. This sucks. 3 days. This morning everything was fine. Couple of hours is all it took to ruin years of trust in the brand. I'm done. This is outrageous

DONT BUY FOR THE PRICE ITS HORRIBLE DOES NOT WORK I HAVE HAD ISSUES HEATING MY AQUARIUM SINCE I BOUGHT THE HEATER YESTURDAY

Woke up to the smell of burning in my room around 3:45am today, was concerned it was my new mist system for my gargoyle gecko. Then realize there’s little black specks and water all over my room, my mirror, the ceiling. Then step on something, turns out it’s burning heater parts that burned a hole in my carpet and foot. Wonderful way to wake up when I have a 7am class tomorrow. So now I unplug my two inkbird controllers for my heaters, I was only using this heater as a backup since my other one wasn’t getting up the temperature I wanted. Try to find the heater, which was in the back of a tank with built in filtration, and it isn’t there. It’s laying across the room, unplugged itself from the heater, about six inches from my head. The rest is on top of my 29 gallon next to the tank that had this heater, and whatever else is sprayed on my ceiling and bed or burning into my carpet. Absolutely ridiculous that a practically new heater exploded, I bought it two months ago but it had only been running two weeks. Was keeping the tank at 76°, fully submerged, and I cannot come up with a reason for this happening other than it being a crap product. These heaters often come back into the store I work at with complaints of them stopping heating the tank after a few weeks, but never this so far. I now get to enjoy the smell of burnt carpet and finish cleaning up the mess of the explosion before I get up at 5:30. Thanks Tetra!