Mini Submersible Aquarium Heater, 25/50/100/150/200/300 Watts Adjustable Fish Tank Heater, Built-in Thermometer, External Temperature Controller, Smart Memory (10 Watts(USB))

I have a 1.5 gallon fish thank. I noticed the water was colder than I wanted to be so I bought this mini heater. The heater shuts off when the water is warm enough. The heater does not over heat the water and it is easy to set. I love this heater.

Need to preface with the fact that I have bought both the 10- and 20-watt version of these.I have a 2gal reef tank and the 20watt is a perfect little heater.The 10 watt I use to pre-heat water for water changes. At 2 gallons a water change that is not pre heated is quite the shock on the tank inhabitants.All in all, they are nice little heaters with a display that shows both the set temperature as well as the current water temperature.I will add, that at times the reading can be off by a degree or two. I think this is due to the fact that the heating element and temp sensor are in the same housing, so the reading might be taken at the same time it is heating, or at a time when it is not heating. This is a guess at best.I've compared it to two other reading from various thermometers (Stick on, and in tank) All three were one to two degrees off. So who knows.

I had this in a small container I was trying to use as a little hospital "tank", but this heater was not accurate. Ended up getting a bigger tank and more dependable heater.

This is a nice little heater. i use it in my 4 gallon beta tank. Over the winter my beta got really sluggish, because the water in his tank as colder than he liked. So i used this to keep the water warmer. It did a pretty good job of keeping the temperature consistent. Suction cup worked fine, and it's small and doesn't seem to bother my beta. Good product for the price.

Great for a beta tank.

Got this for my betas tank. It's a pretty small tank so this was a perfect find. However it doesn't heat the water up to the temp is set at. We were aiming for mid 70s, have it set to 81 and the water stays about 71/72 most of the time. So it does raise the temperature just not as high as I wanted.

It is a great heater if you use the 3 Amp (15 Watt) or more power supply for the 1.5-liter tank.2 Amp (10 Watt) can be ok, but reaching the setting temperature takes much longer.The instruction could be better.

I have a 2 gallon glass fish bowl for my betta & tetra cuties. I have the heater suctioned lower behind the leaves. Easy to set, nice big led temp numbers. I'm happy that I can know it's keeping the water at an even temp :) Happy fishies!

Dommage il Est mort apres 2 mois d'utilisation malheurement alors je donne 3 étoiles