Heavy-Duty Black Rectangular Air Stone with Brass Nozzle (5 x 3.5 cm)

Boost the aeration and oxygen levels in your aquarium with this durable and efficient Black Rectangular Air Stone, available now at www.onyxaqua.com. Proper oxygenation is crucial for a healthy aquatic environment, and this solid air stone is designed to produce a steady, fine stream of bubbles to maximize gas exchange, keeping your fish active and your beneficial bacteria thriving.

Key Features & Benefits

• Premium Brass Connector: Unlike standard stones with fragile plastic stems, this model is equipped with a sturdy, stepped brass nozzle that ensures a tight, leak-free connection to your airline tubing.

• Optimal Oxygenation: The highly porous mineral material efficiently diffuses air from your pump into a consistent curtain of fine bubbles, significantly increasing surface agitation.

• Sturdy & Stable Design: Crafted into a dense, solid rectangular block, this air stone carries enough weight to stay firmly submerged on the bottom of your tank without floating away.

• Discreet Aesthetics: The natural black and dark grey speckled finish blends seamlessly into dark substrates and aquascapes, keeping the visual focus on your fish.

Technical Specifications

Usage & Maintenance Tips

To get the best performance and longest lifespan from your new air stone, follow these simple preparation steps:

Pro Tip:

• Pre-Soak: Always soak the air stone completely in aquarium water for 15 to 30 minutes before connecting it to your air pump. This primes