HITOP 500W Digital Aquarium Heater, Submersible Large Fish Tank Heater with Temperature Display and External Controller for Fish Tank up to 150Gallon

Heater still works great, haven’t had any issues and is true to the temp set.

Aquarium heaters have come a long way since I tried one a decade ago. This one is excellent. I have it inside my stock tank, which is inside a greenhouse, and it keeps the water warm enough for my turtle to stay in the greenhouse in winter. A pump circulates the water in the tank.The built-in cage keeps my turtle from hurting himself. I love that the cage is built-in and that the heat element is titanium, instead of glass. It's just a smarter way to build this.The thermostat runs a little low compared to my floating thermometer. I started out with it set on 70, and it kept the water about 66'. I moved the temp up to 80 and now it sits around 75. I will probably move it back down to 75 for a happy medium.ETA you might see some buildup on the bottom half of the element that looks brownish, like rust. It's not rust, but diatoms, and a soak in vinegar gets them off. You do want to remove them to keep the heat conducting into the water.

Ordered this aquarium heater for our stock water trough during freezing temps. Works just fine. However, the instructions were clearly written by someone where English is not their first language. The instructions as written are confusing. Interpreting what's written was frustrating as I was unsure whether my interpretation was correct. More of a trial/error method.

this tank heater is so easy to read it is lite up & sticks to the back of the tank

Heats over 4 degrees above set temp then drops back down to below the set temp. Not sure it is supposed to do that.

To heat my 180 gallon saltwater aquariums for what I got it wasn’t expensive at all really I mean it was way under what anybody else wanted for one if you could get one I like to never found it. Amazon was the only one that came through.

This is actually my 2nd heater ...I bought one I believe about a year ago, love it. Its protected by a cage thing, so no outrageous impact if dropped. It tells you the tank temp and your desired temp( mostly the same amount) and if it gets unplugged it will remember what your setting is . Very reliable in a year not one problem, got one for hospital tank now . I've bought numerous heaters...this is the best one ever!!! Smart buy for sure!!

I have 6 of these heaters all of various ages but all work great have had no issues. The temperature shown on the heater is accurate.