**AQUANEAT 4x2 Inch Large Aquarium Air Stone (2 Pack) - Bubble Diffuser & Aerator for Fish Tanks, Ponds, Hydroponics - Enhance Oxygenation & Water Circulation** *(Perfect for Freshwater & Saltwater Aquariums, Hydroponic Systems, and Outdoor Ponds!)*

4" Large Air Stone Cylinder Bubble stones fired at high temperatures have uniform and delicate pores, which can be reused and have a long lifespan. The bubbles are delicate and not easy to block, with many and dense bubbles. Suitable for use in freshwater environments, increasing the oxygen content in the water and creating a safe living environment for fish, such as aquariums and fish tanks. Small Airstones Cylinder Gray Bubble Ball Air Stone with Shell Air Stone Disc Aquarium Tubing Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.6 out of 5 stars 1,497 4.5 out of 5 stars 482 4.2 out of 5 stars 173 4.4 out of 5 stars 648 4.6 out of 5 stars 2,953 Price $3.97$3.97 $6.99$6.99 $8.79$8.79 $5.88$5.88 $5.48$5.48 Dimension 0.55" D x 1.00" H 2"D 4"Dx0.8"H 1.5"Dx0.6"H 25 feet Count 12pcs 2 pcs 1 pc 4 pcs 1 roll

Widely applicable Suitable for hydroponic systems, ponds, aquarium fish tanks, helping extend the life of your nutrient solution, keep fish/ roots healthy and promote plant growth

Air Stone Dimension 2 "D x 4" H;Fits for 3/ 16 inch standard airline tubing

Recommended a high-output air pump at least 7W-10W or a commercial air pump

Quality and safe materialsmade of mineral and washable material,safe to your fish

Note soak the stone completely in water for 2 hours before use; clean it with a brush after a period time of use