HITOP 50W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cups for 6-15Gal

I’ve been using this adjustable aquarium heater for a while now, and it’s been working great. The temperature is easy to set, and it maintains a stable water temperature without constant adjustments. My fish have been much more active since installing it, which tells me the heater is doing its job well.The heater was simple to install, and the compact design doesn’t take up much space in the tank. It heats the water evenly and has been reliable so far.The only minor downside is that it takes a little time to reach the desired temperature initially, but once it does, it keeps the temperature consistent.Overall, this is a dependable and affordable aquarium heater that’s easy to use and performs exactly as expected. I would definitely recommend it to anyone looking for a reliable heater for their aquarium.

Still running! and running well. This submersible heater keeps water temperatures incredibly stable in small 6-15 gallon setups. The thermostat dial is easy to read and adjust, and the heavy-duty suction cups keep the heating element securely attached to the aquarium glass without slipping. The peace of mind is worth any additional cost. There is no odor, and even in our small aquarium, it fits great.

If you’re looking for a reliable and affordable heater for you tank then this is the one! I have it in most of my tanks and they keep the temperature like no other even though the temperature in my house has been fluctuating but my tank’s temperature is always the same! The oldest one I have I got it almost a year ago and it’s still working like day one. 100% recommended!!

Okay, so I bought a 50W heater for my 10-gallon tank a few months ago, and after a few weeks I noticed it wasn’t heating the water like it should. I had it set to 85°F at one point, and it wouldn’t get above 77°F for days. I exchanged it for a new one, and that one worked for about two months before the same thing happened. It stopped heating the water to the desired temperature.Update: the seller was very nice and issued me a refund without needing to send it back. Great customer service!

good quality

Easy to adjust, keeps tank at set temp, easy to use, no noise, great quality, very efficient in keeping tank warm, perfect size and fit for my aquarium

PLEASE DO NOT BUY THIS! I just had a devastating loss in my tank because this thing decided it wanted to get hot and melt all all the plastic clips. It probably shocked my entire tank!I just did a water change on my 10 gallon tank. I always shut down my heater, filter, and air bubblers. Once the water gets high enough to cover the heater, I start everything up again. Jesus, I had just put the last gallon of water in the tank and all I could see was smoke. I thought it was my light, but it was coming out of the water because everything was melting. I switched the main power button on my surge protector. My fish started flopping and sinking to the bottom. I had a net that I was able to catch a few tetra fish that were at the top. My shrimp darted to the top of the tank, then nose dived to the bottom and turned upside down.I am so upset right now. I just lost 5 fish and a dozen shrimps. Probably will lose my assassin snails and two other tetra fish that I was able to get out of my tank. I have several pest snails that are now laying on their sides that will probably die. But those are not such a big deal. I spent nearly 6 months on this tank getting everything right. I just didn't have a heater, and opted for this one because of all the "Wonderful Reviews". Don't do it people.I am adding photos, not of my fish that were loss.

Technically it works but certainly not well. I’ve had to turn this heater more than 6 degrees (f) higher than listed. Water temp does not stay stable. I’ve been using two different thermometers to measure temp fluctuations. Will probably have to buy a different heater before I add a betta to my tank. Can’t recommend this one.