Review on 🐠 LED Digital Display Aquarium Heater - 50W 100W 150W 200W - Small Fish Tank Heater with Over-Temperature Protection and External Controller by Tamika Lawrence

Thermometer not accurate. It heats up for about 5 seconds, then turns off and the thermometer starts to rise, then fall, then heat up again for another 5 seconds. I had this in my tank for about an hour and it only raised the temperature by half a degree. I do not recommend this product. Edited: good. Once the temperature rises to the temperature you set, it seems to stabilize. I am changing my rating. That's actually very good. It seems to keep the temperature within a couple of degrees and the thermometer is pretty accurate. I have a different thermometer in my aquarium and it fits perfectly. Edited: stopped working after a few weeks.