Review on 🐠 Quartz Glass Submersible Heaters for CNZ Aquariums by Nicole Baca

I have had this heater for a little over three years. I've noticed that the past few months it has randomly left the water too cold. I walked down the stairs this morning and found my largest African cichlid upside down and pale; now work on saving it by disconnecting it from the 75 gallon hot water tank. The content of nitrates and ammonia increases with increasing water temperature, while the oxygen content decreases. Because of this, I may lose our best fish because the heater happens to heat our water above the set temperature. Wouldn't buy again. It should work consistently and reliably so as not to overheat or overheat the water, depending on which setting you choose. gradually add some cooler water. He initially recovered to the point of not standing on his head, and then gradually regained his energy. It took several hours before I was able to successfully return it to the tank and observe normal behavior. My smaller cichlids (1"-2") didn't suffer from the extreme heat but became more aggressive towards each other and lost interest in the food. Did a partial water change to cool the aquarium. Just tell this story as a successful fish rescue in this situation, although an aquarium heater should never fail in such a dangerous way.