Large 4-Pack Cylinder Aquarium Air Stones

Why you'll love it

These heavy-duty air stones create steady, powerful bubbles that keep your fish healthy and your water properly oxygenated. At 4" x 2" (10.2 x 5.1 cm), they're substantial enough to create excellent water circulation without breaking your budget.

Product Description

Looking for serious bubble power? These large cylinder air stones deliver consistent aeration for aquariums, fish tanks, koi ponds, and hydroponic systems. Each stone measures 4" tall by 2" in diameter (10.2 x 5.1 cm) and weighs 0.66 lbs (0.3 kg), so they sink right to the bottom and stay put. Made from durable silicon carbide that's completely fish-safe, they work with standard 3/16" airline tubing and need at least a 10W air pump to perform their best.

The porous material creates fine, even bubbles that boost oxygen levels and keep your aquatic friends happy. Whether you're running a freshwater tank, saltwater setup, or hydroponic garden, these stones help maintain healthy water conditions and promote better plant growth.

Interesting Points

Heavy-Duty Construction That Stays Put

At 0.66 lbs each, these stones sink immediately and stand stable on your tank bottom—no floating or tipping over like lightweight alternatives.

Professional-Grade Silicon Carbide Material

Built from washable silicon carbide that's completely safe for fish and plants, plus durable enough to handle months of continuous use.

Perfect Size for Serious Aeration

At 4" x 2" (10.2 x 5.1 cm), these create substantial bubble coverage without taking over your tank—ideal for medium to large setups.

Works With Standard Equipment

Fits standard 3/16" airline tubing and works with any air pump rated 10W or higher for optimal bubble production.

Product Specifications

• Dimensions: 4" H x 2" D (10.2 x 5.1 cm)
• Weight: 0.66 lbs (0.3 kg) each
• Material: Silicon carbide
• Tubing compatibility: 3/16" standard airline
• Minimum air pump: 10W output
• Quantity: 4 air stones per pack

Usage Notes

• Soak completely in water for 2 hours before first use
• Clean regularly with a brush to prevent clogging
• Use high-output air pump (10W minimum) for best results
• Replace when bubble output decreases significantly

Package Inclusion

• 4 x large cylinder air stones (4" x 2")

Ready to upgrade your tank's aeration system? These professional-grade air stones deliver the consistent, powerful bubbles your fish deserve—and your wallet will appreciate the 4-pack value.

Shipping and Returns

• Listed Shipping: 2–4 days.
• Returns: Returns policy.