110V 50W Watt Submersible Aquarium Fish Tank Water Heater

The heater that arrived does not look exactly like the one in the picture. That said, I am 100% satisfied with this heater. I put this 50 watt heater in a 5 gallon Corydoras Habrosus breeding tank, and it has already been through a month-and-a-half breeding cycle with varying temperatures. The temperature dial is about 2-4 degrees off, but I am used to having to calibrate heaters (even the expensive ones seem to be a bit off). For the price and quality, these heaters cannot be beat. I will be ordering another one soon for a new grow out tank. Be aware that the cord is short.

Pros:

Price

It just works

Gravel guard

Well designed suction cup mount

Good construction

Cons:

Short cord

Need to calibrate to your thermometer (Like all but a few adjustable heaters I have seen, the thermostat is off a couple of degrees no big deal).

At first I was a little miffed because it did not come with any instructions, but after a few months of tinkering with it, well it works great I like that u can adjust the temp, not really sure in how much, but after getting a thermometer it stays at a steady 80 degrees and even after doing water changes it adjusts itself to get right back up to 80. Its worth it for the price I paid. But it could have been a potential disaster if I didn't figure it out. Thanks

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Stuck it in a cooler and used it to keep chicken water from freezing last winter.

Works great so far made it through this winter.

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item broke after 1 month of use. the heater kept a constant temperature until it broke that's why it gets 2 eggs vs 1

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First off it isn't even the one in the picture. There are no instructions. The thermostat isn't set to degrees. It has 18-32 and that's it. It doesn't adjust easily at all. You can't tell where the temperature is cause no scale is included. It isn't worth 5 cents. Basically, the heater blows monkey chow. Save yourself the headache and your money. Don't buy this heater.