About This

• Size: 8"H X 2"D. Fits for 3/16” (4.7mm) inner diameter tube.
• Free Standard Tubing Value Bundle With EACH Stone including ONE L, T, I Connector & ONE Non-Return Check Valve.
• Designed to add oxygen and circulate nutrition to your hydroponic growing system & aquarium.
• High-temperature molding to produce fine bubbles for oxygen replacement.
• Made of high quality and harmless mineral material.