The 2 inch air stone balls feature durability steady bubbles and high dissolved oxygen rate Optimal for aerating your water reservoirs and livening up your aquatics A necessity to have in the house of aquatic lovers

Medium Bubbles: The air stone balls produce abundant dense bubbles A great way to increase oxygen solubility in your aquarium and enliven the aquatic lives Model: ASB050 Jetting volume: 5 Lmin Recommended air pump power: > 4 W Standard ID airline tubing: 316 or 38 Well-built and efficient for long-time service Reliable Material: Made of mineral material and sintered at a high temperature great for aeration in aquariums DWc systems or ponds Keep fish or roots growing healthily Stable in Water: Each ball measures 2 in diameter and weighs 375 oz Well weighted to sink to the bottom and lie stably in your tank without floating up Easy to Use: Soak the stone completely in water for 1 hour before use clean it regularly with a brush as it gets clogged after weeks or months of usage