Features: *Made of durable and practical high-quality material, this humidifier cleaner demineralization float is designed for most humidifiers and fish tanks. *The cleaning fish floats on the water while keeping your humidifier clean and fresh. It contains no harsh chemicals and is compatible with all humidifiers. *With the help of the cleaning sharks, this product eliminates the white dust caused by calcium, lime, and magnesium in hard water. It lasts for 30 days and reduces the frequency of tank cleaning. *The cleaning sharks are effective in removing up to 99% of odor-causing slimy and unsightly substances. They are suitable for humidifier tanks with a capacity of up to two gallons. *To use, drop the cleaning cartridges into the humidifier's water tank for fresh and clean mist. The opening of the tank should be at least 1.3 inches (3.5 cm) in diameter. Specifications: *Part Name:shark filter *Material:plastic *Size:As picture *Color:As picture *Fitment:No *Number of Pieces:6 Package Content: 6* shark filter Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.