• Suitable for 3-5 Gallon Tank: 25 watt powerful and slim design fit for small fish tank. The Way of Measure Watt Heater for Your Fish Tank Needing: Watt=(Tank's Length*Wide*Water Height) /1000*2.
  • Power Saving: Our submersible aquarium heater automatic temperature regulate between on 77℉ - 82℉, Unlike the traditional manually adjusted fish tank heaters, no need to set.
  • Smart Thermostat: It works in intermittent operation mode and will automatically turn on/off to achieve the setting temperature constantly and stably, Energy-efficient.
  • Come with Thermometer Strips: By using this Thermometer Strips, you will be able to monitor. An easy to identify blue color shows the current temperature of your aquarium water. Temperature Strips is for reference only
  • Quality Assurance: This product have certificated by CE, ROHS, FCC certifications. Anti-explosion, Waterproof, Scald-preventing, safe operation for pet betta

Keeps the tank at a good temperature and was very easy to set up. I’m not a tech savvy person so this was perfect for me! So far is durable and see myself using it for a long time!

My little betta is no longer confined to a cold old vase! This heater makes it the new tank the right temperature and my betta is happy and thriving because of it.

My husband loves fish so we always have fish tanks in the house! This tank heater is great quality and just what we needed. It has a sleek design that doesn’t distract from the tank or make it look tacky. Works great!!

I recently bought fish for our classroom pet and this works perfectly! Love how it controls the water. Would recommend to all to get!

My daughter has a beta fish that was looking a little sluggish in her daily routine. I read that these fish prefer the water to be warmer than others and a tank heater would make the fishy more comfortable. I purchased this heater and easily installed it with the suction cups, plugged it into the wall and within hours there was a noticeable difference in the fish's behavior. My daughter is happy that her fish is feeling better and I'm satisfied that I could fix this problem with such an inexpensive, quality device.

Great heater for small tanks. Makes it simple, just put it and it will handle automatically. Easy to use. Simple design not bulky like some, perfect for tanks.

I bought this fish tank heater for my mother in-laws tank . It is perfect for her smaller tank. It has a sleek design and doesn’t overpower the tank . Very simple to understand and set up . It gets the job done .