As is my habit, I placed the heater in a 5 gallon bucket to test it before adding to my tank. It was fully submerged and vertical. I waited a full hour before plugging it in, as per the instructions. Two hours later, it quite literally exploded, sending out mangled pieces of plastic around the room. The force of the explosion was enough for the water to reach the ceiling.
No matter how i set the thermostat the water temp stays at 74’
After having issues with 3 Tetra pre set heaters I decided to buy 2 of these. None of the Tetra heaters reached a temperature of 75°. The Aqueon brand I bought a 50 and the 100. The 50 worked fine when set at 76° it reached the proper temperature. The 100 when set at 76° did not. In order to reach that temperature it needed to be set higher. No problem though because it can be adjusted. I will never purchase a pre set heater again.
Bought the 150 watt Aqueon heater for my 36gal tank and got it to temp fairly quick and so far no problems the 3 weeks it's been in there.
I purchased this for a 20g aquarium but found not only the dial to set the temperature was inaccurate but after a few months I had to keep bumping the temperature setting up to maintain the correct temperature. To have water at 78 deg, I had to set the heater at 81. After a few months, I had to change it to 82deg to maintain. Then eventually, 84. I didn't trust it anymore and figured it would over heat the water.
I have found the Aqueon submersible and Pro heaters to be accurate and dependable. I've used other brands and at some point had problems. I have a 50W, 100W and 150W and never a problem in 2 years.
This heater broke within 2 weeks. Very disappointed. Our frogs are stuck in cold water now.
I bought this plastic heater because I recently lost over 12 fish in my big show tank filled with my beautiful male Cichlid breeders! I had a glass heater in this tank and some of the males must have been chasing each other and they broke the glass on the heater. I lost the 12 fish due to them being electrified! I’ll never ever use a glass heater again!!! This wonderful heater works perfectly and I never have to worry about electrocution again!!! Thanks Aqueon!!!
So far the heater is keeping temps steady. Plus I like the total black color as it makes the heater disappear against the tank background.
I got this 50w adjustable heater after my 10 gal tank came down with a horrible case of ich. As soon as I got this, I put it in a pitcher of water for 24-48 hrs to test for safe temps/functioning and after putting in the tank, I did find that mine had a 1 degree difference between the setting on the knob on the top (82F) vs the thermometer in the tank (81F), but, no problem as Aqueon advises that this can happen. 4-5 days after running this heater at 81F and both of my fish are feeling a LOT better. (More energy, normal appetite again, and cysts are entirely gone!) This DOES have a lot higher up line on it for the minimum water line, so, take care when doing water changes, even 1/3 tank changes. (I had to unplug it during them vs the fixed temp 50w Aqueon one I had before with a water line lower on the heater.)