This 8-pack of 4.2-inch Air Stone Discs (Model ASD108) delivers ultra-fine microbubbles—300 to 500 microns—to significantly improve oxygenation and water circulation in aquariums, fish tanks, and hydroponic systems.

Made from premium carborundum stone and sintered at 1500°C, each diffuser ensures durability, stable performance, and long-lasting bubble output. The microbubbles help boost dissolved oxygen, promote beneficial bacteria activity, and create a beautiful bubble wall effect.

Each disc includes three suction cups for secure placement, preventing movement and reducing wear. Ideal for freshwater and saltwater aquariums, shrimp tanks, planted tanks, breeding tanks, DWC buckets, and hydroponic setups.

Key Features

• 8-Pack Value Set
  Perfect for multiple tanks or high-oxygen applications.

• Ultra-Fine Microbubbles (300–500 microns)
  Boosts dissolved oxygen for healthier fish, plants, and bacteria.

• Premium Carborundum Construction
  High-temperature sintering ensures strength and long-term performance.

• Powerful Oxygen Output
  Jetting volume: 12 L/min — ideal for tanks up to 40 inches.

• Stable & Secure Mounting
  Includes 3 suction cups per disc to prevent floating or vibration.

• Compatible with Standard Airline Tubing
  Fits 3/16" (5 mm) tubing; recommended pump: 4–8W.

• Multi-Purpose Use
  Great for aquariums, hydroponics, circulation systems, aquaculture, and more.

Specifications

• Model: ASD108

• Quantity: 8 PCS

• Size (each): 4.2 in × 0.75 in (108 × 19 mm)

• Connector: 5 mm (standard 3/16" airline)

• Bubble Size: 300–500 microns

• Jetting Volume: 12 L/min

• Max Pressure: 0.012 MPa

• Recommended Pump: 4–8W

Usage Notes

1. 1. Soak each air stone for 5 minutes before first use.

   2. Clean periodically to prevent clogging.

   3. Store in a dry, shaded place when not in use.