The Zoo Med Repti Cooler will help prevent overheating in your terrarium or paludarium by directing airflow from outside your enclosure through a wet cartridge, cooling the air and directing it down through the exhaust vent. Lowers ambient temperature through evaporative cooling by up to 10°F, just add water. Great for seasonal cooling to encourage breeding response. Quiet 3-speed fan. Directional air vent. Use with Zoo Med’s Environmental Control Center for precision accuracy.