Round Fine Bubble Aquarium Air Diffuser with usb Pump Set 2.1-4"(5-10cm)

Build a finer, more adjustable bubble display without buying parts one by one. This PetTime Aquarium Air Stone Kit pairs a 2.1-4 inch (5.2cm/10.2cm) diffuser disc with a 3W quiet USB-powered air pump. The fine-bubble air stone spreads pump output across a round surface, while the included flow valve lets you tune the bubble volume for your tank. Ideal for freshwater fish tanks, goldfish aquariums, planted displays, and home aquarium owners who want dependable aeration with a clean look.

• 💨 Dense Fine Bubbles: High-density pores create a fuller, more even bubble field than a basic large-bubble stone.
• 🎚️ Adjustable Airflow: Turn the control valve up for a bold bubble column or down for a gentler aquarium display.
• 🔇 Quieter Setup: The included 3W quiet air pump and fine diffuser help create a calmer everyday bubbler experience.
• 🧰 Complete Kit: Includes the air diffuser disc, USB-powered pump, 6.6ft/2m airline tubing, control valve, and tubing suction cups.
• 🛡️ Reinforced Connection: The integrated ABS air inlet is thickened to help reduce cracking during normal setup and cleaning.
• ✨ Easy Value: A matched aquarium bubbler kit saves time sourcing separate parts and makes airflow adjustment simple for fish keepers.
• ⚠️ Care Tip: Bubble output depends on pump power, depth, hose resistance, and cleanliness; clean the disc about every two months and keep the pump dry.

Your purchase is covered by our standard 30 day quality guarantee.