fishkeeper 600W/800W Aquarium Heater, Double Tube Double Heating Speed Adjustable Fish Tank Heater Submersible Pond Water Heater for Saltwater Freshwater Tank 60-220 Gallon

Amazon.com Price: $39.99 (as of 20/07/2023 06:59 PST- Details)

🔥【Double Tube Double Power】: 600W Aquarium heater with protective case, which has a faster heating speed than ordinary heating rods, and is more suitable for medium/large fish tanks. The fastest heating time can reach 5 seconds, automatic constant temperature function and overheating protection.
🔥【Adjustable Temperature/Smart Temperature Control】: The temperature can be adjusted between 54-93°F, you can set it to the right temperature by rotating the pointer. The automatic thermostat function automatically reduces power when the set temperature is reached to save energy.
🔥【Quartz Explosion-Proof/Quality Enhancement】: 2mm thick quartz glass, explosion-proof, not easy to crack, very safe for humans and aquatic animals. The black shell is a high temperature resistant ABS material that protects the fish and keeps you from getting burned too.