Melearch Aquarium Air Stones 4 inch, 2 Pack Fish Tank Bubble Stone, Aerator Bubble Diffuser, Nano Air Pump Accessories, Blue Disc-Shaped

• Premium & Safe Material: Crafted from natural mineral materials and fired at 1400°C, our aquarium air stone is non-toxic and safe for all aquatic life. The durable metal anti-detachment interface resists corrosion, ensuring long-lasting performance without harming fish, plants, or delicate ecosystems.
• Ultra-Fine Bubbles for Optimal Oxygenation: High-density pores generate a cloud of fine bubbles, dramatically increasing oxygen exchange in your tank. Promote healthier, more active fish and vibrant aquatic plants with efficient, silent aeration.
• Perfect Size & Compatibility: Dimensions: 3.94" diameter x 0.67" height. Fits standard 4mm airline tubing. For best results, pair with an air pump >4W. Ideal for nano tanks to medium-sized aquariums.
• Easy Setup & Maintenance: Simply soak the air stone for 1 hour before first use. For deeper tanks, a stronger pump may be needed. Extend its lifespan by gently cleaning every 1-2 months with a soft brush—no hassle, just consistent performance.
• Versatile for Home & Commercial Use: Essential for aquarium bubbler, fish tank accessories, aquascaping, and breeding setups. Also used in pond aeration, hydroponic systems, and oxygenating live bait.

The Best Aquarium Air Stone For Your Needs: Keep your fish and plant healthy. Specification: Each Air Stone Measures: 3.94" D x 0.67" H Count: 2 pcs Shape: Disc Weight: 6 oz Applicable : 4mm standard ID air tubing Recommended Air Pump Power: >4w Suggestion: Soak for an hour before use. Clean once every 1-2 months Cleaning tips: 1. Put the air stone cleaning tablet in the basin and add appropriate amount of clean water 2. Soak the air stone in water for about 60 minutes 3. Use a brush to gently scrub the stains on the surface of the air stone 4. Rinse the air stone clean Notice: 1. The air outlet effect varies according to the power and air volume of the oxygen pump and the water depth (the greater the power, the shallower the water depth, and the more uniform the air stone effect) 2. If the air outlet is uneven or no air is found during the first use, it means that the air pump does not have enough air volume, so please replace it with a higher power air pump 3. If it is blocked by dirt and the bubbles decrease after long-term use, please clean it in time 4. The air outlet of the air stone is small, and it is recommended to use a three-way combined air hole for a double-hole or multi-hole air pump to increase the air volume