I don't like that you can't adjust the temperature. It stays at 78 and my fish prefer 80-82. I wouldn't have purchased this Heater if they had put that somewhere clearly noticeable in the description. It's useless for the tank I bought it for but It's working out well in my shell dweller tank so I'm satisfied. Wouldn't buy another one though.
Verified purchase: Yes | Condition: New
I was glad that I finally bought this little heater for my betta fish but when I put it in the tank the light indicator is always showing me the green light and not red light. When I checked the temperature it’s always at 70• F. It would not go up! I’m really sad that this heater didn’t work out the way it’s supposed to. Now I gotta buy a new one smh.
Verified purchase: Yes | Condition: New
The heater works well, but came without a suction cup, so it’s hard to keep it in the correct spot. I think that should have been listed differently in the description rather than “slight signs of previous use”.
Verified purchase: Yes | Condition: Pre-owned
Nice heater for a small quarantine tank. No adjustability, but does have a light display that lets you know if it's heating or has reached the optimum temp and is holding in there. Small and unobtrusive.
Verified purchase: Yes | Condition: New
I've seen several reviews of this heater complaining of failures but i have not experienced the same. its been nothing but consistent and good. i currently have and use 8 of these and all of them work for me as expected. That's why I have eight. That being said; everyone should always remember its a mass produced machine and sometimes you can get a defect. Aquarium heater, washing machine, auto, batteries.....etc. I have a few more aquariums to set up and for the set & forget heaters I like these.
Verified purchase: Yes | Condition: New
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