Review on 🐠 Woliver Aquarium Heater: Dual LED External Temp Display, Submersible Fish Tank Heater (100W/300W/500W) - Ideal for Saltwater & Freshwater Fish by James Bullets

This thing beeps more than an angry NYC driver. We've tried taking it out, unplugging it, leaving it unplugged for a few days, restarting, pressing buttons, etc. It keeps beeping randomly with a high temperature warning when the water is still VERY cold. Luckily we have an adult red-eared slider. So the temperature of the water doesn't really matter - it'll just move less when it goes into their version of hibernation. As far as I can tell, it didn't work at all. Despite the message about overheating, the water has not heated up. We ended up buying another one and the day after installing the new one our turtle was happily swimming in her tank. I do not recommend this faulty product.