[EXPLOSION PROOF]Made of thickened quartz glass and not easy to crack.Fully submersible and safe for fish without any toxic substance producing. [ADJUSTABLE TEMPERATURE]Set the temperature from 68°F to 93°F as you desired.Easy to adjust temperature that suits more species of fish.50W heater is suitable for 5~15 gallons fish tank,heater length - 7.9 inches.Please choose the heater according to our chart. [SMART TEMPERATURE SENSING]Automatically regulate and maintain water temperature,imitate the original ecological environment for your fish.Suitable for both fresh and salt water. [AUTOMATIC ON&OFF]When water temperature reaches preset temperature,the heater will automatically stop heating(OFF Light).The heater will automatically start heating again (ON Light) if water temperature is lower than the preset temperature. [NOTE]Keep 100% submerged into the water.Unplug the power supply when cleaning the fish tank or changing aquarium water.Place the heater near by filter or pump to keep
