IOAOI 50W Aquarium Heater for up to 20 Gallon Tanks - Shatterproof, Suitable for Marine and Fresh Water - Engineering Plastic Tube & Stainless Steel Inside - Adjustable Temperature Review

. So I bought 2 of these instead. Yes, the suction cups are still pretty decent. The heat isn't as accurate as the dial shows, I heat my tank to 76⁰ but the dial is set to 80. I ended up dialing the temperature with a digital thermometer. Overall, this is the best heater I've found because it's so cheap.

If you hesitate to buy this product, don't hesitate! I have had this heater since October 2020 and it is perfect. My tank is constantly kept at 75 degrees. The plain black is matte and looks very good in the aquarium as you can even hide it with the LED light on it. Their customer service is fast, friendly and they are the best I have come across. I would highly recommend this product to anyone.

It was hard to find a nice heater at a reasonable price, but here it is! This heater has worked well in my 10g tank for the past 3 weeks. PROS: I love the matte black finish with gold text and the simple design. The included suction cups work very well - much better than my 50 watt cobalt heater. The high-quality packaging is also a pleasant surprise. CONS: The functionality is nothing special. It doesn't display current temperature readings and doesn't have a detailed set of settings. While it

We love this brand of aquarium heaters. We have five in total [of varying capacities] and they have always been reliable, accurate and durable. Cool packaging even. They're also the nicest heaters we've ever seen. The all black finish is very nice. Not to mention if you're worried about exploding, cracking, or shattering glass heaters, the metal construction is excellent for peace of mind. The included suction cups are pretty standard; ours seem to be working decently enough and haven't lost…

I've had this heater for 4 months now and it's mostly good. It seems to me that it doesn't heat up above 82, which is normal as I only need 78-80 degrees. The scale does not correspond to the actual temperature. For example, I need to set my watchface to "84" (the maximum value is "88") so that it reaches a temperature of around 78-80. But it heats up nicely if I set it up properly. Another thing is that it is difficult to lower the temperature by a few degrees. I adjust the dial a bit and it…

I waited a year to replace a broken old pro heater (was a great heater) because I had several different replacement 50w heaters (including a redesigned Pros) that either wouldn't turn on or failed for a few days. I bought this based on another reviewer who recommended it as a replacement for a professional heater. Very happy with my purchase. As another reviewer noted, setting the temperature is a bit tricky as you have to press down on the dial to turn it (while holding the heater with your…

I installed this heater in my 10 gallon aquarium where I race without fish. Let it sit for an hour before turning it on and rotating it 80 degrees. The temperature has never risen above 77. I keep turning the temperature higher and higher. The pace stayed at 77.6. Return process started. As I removed the heater from the tank, I took a close look at the temperature controller. The problem encountered was that the rubber grommet on the top of the heater that the handle protruded from was…

At first I only bought one for my 5 gallon betta tank but it worked and I bought another for my 20 gallon guppy tank. Now I'm buying a third to heat water when I do water changes as a backup if I ever need it. I was attracted to this heater because it was black and not glass so I didn't have to worry about it exploding. I still disconnect it when doing a major water change that causes the waterline to drop below the minimum waterline printed on the unit. The device runs a little colder than I…