Marineland Precision Submersible Heaters Cages and it has a locking

and it has a locking mechanism that allows for continuous spraying

Use this product to provide a healthy environment when setting up a new aquarium or maintaining one that contains a higher than average fish stock

All Natural

ferrous sulphate

ADDITIVES (per kg): Technological additives: Tocopherol extract from vegetable oils: 308 mg

Marineland Precision Submersible Heaters Cages and it has a lockingDescription Adjustable temperature dial clicks through each degree for accuracy Thermal switch automatically turns off past max preset and resets once the temperature lowers Advanced mica core heating element for efficient heat transfer and enhanced durability Three window positions to view the temperature display Sizing 50 watts up to 12 gallons 75 watts up to 20 gallons 100 watts up to 29 gallons 150 watts up to 40 gallons 200 watts up to 55 gallons