HIGHLY SEADLEDMake sure to tighten the top threaded port, press down the suction cup to fits closely to the surface, to achieve the best atomization effect. EASY TO CLEANOpen the top diffuser cup lid to replace. It is recommended to clean once a week to avoid bacterial growth. QUALITYAluminum alloy CO2 aquarium atomizer, nickel plated after oxidation treatment, acid and alkali corrosion resistance, durable. EASY TO INSTALLInstalled directly under the aquarium or fish tank. Also suitable for low-voltage systems or processor-controlled systems, and 20-60L aquarium. PERFORMANCEThe high-density aquarium atomizer produces small bubbles(diameter of less than 0.1mm), which increases the dissolution rate of carbon dioxide, not easy to block fish tank.