Features: 1Excellent Cleaning Performance: It helps to keep the water quality of the humidifier tank and fish tank clean solves a series of troubles in the daily cleaning of the humidifier and fish tank prolonging the service life of the humidifier and reducing the cleaning time. 2Easy to Use: As long as it sits in the tank it will maintain optimum performance. Humidifier cleaner fish is a nice humidifier additive easy to use and has nice results. 3Add Vitality to the Tank: They float and sway adorably in the fish tank and humidifier tank adding a lot of life to the tank and a lot of fun to the home. 4Application Scenario: It can be used in most evaporators mild mist humidifiers fish tanks evaporators aquarium humidifiers and carburetors to meet the cleaning requirements of different machines. 5Instructions: For a 1 to 2 gallon humidifier two cute little fish are recommended. It is recommended to replace it every 30 days to maintain optimal performance. Specification: Item Type:HumidifierCleanerFishWeight: 159g/5.6ozMaterial: ABSSuitable for: Open diameter more than 1.75 inches machine which can be used.Color: blue Package List: 10 x Cleaner Note: Humidifier openings should be at least 1.75 inches in diameter. Check that the opening of the humidifier is large enough to accommodate the product.