Efficiently Delivers Oxygen: Designed to effectively oxygenate your hydroponic system or aquarium and circulate nutrients through it. Microporous design and airtight construction produce fine, evenly distributed bubbles to maximize oxygen replacement and reduce CO2 levels. With healthy oxygen levels and well-distributed nutrients, roots and fish stay healthy, making up a thriving hydroponic system or aquarium. Maximum surface area: Discreet unit has a small footprint, yet produces large amounts of fine-textured bubbles. Convenient and Versatile: Intake is compatible with standard overhead tubes. The device is easily installed in hydroponic systems, ponds, aquariums, tropical fish tanks and more. Features: Color: green Material: plastic Length: 10cm Width: 1.8cm Height: 1.5cm Package Included: 6* Bubble Release Mineral Stone Air Bubble Bar Instructions for Use: 1. Soak the product in water for 15 minutes before using. 2. Long-term use, such as blocking dirt,