Strong Material Air stone bar is made of mineral material with high temperature sintering with high dissolved oxygen rate and create even and tiny bubbles. Small and compact, which protect you air pump by preventing aquarium water from back siphoning during a power outage. The bubble wall air diffuser makes a great addition to any aquarium and will add great movement to your tank. Widely used to increase the dissolved oxygen level in the aquarium. Air stones allow the aquarium to create beautiful walls of bubbles that not only look good, but also help aerate and circulate the water. Fit for freshwater, saltwater aquarium and hydroponic use. Air Bubble Stone Air Bubble Stone Air Bubble Stone Air Bubble Stone Air Bubble Stone with Aline 2pcs Air Bubble Stone Add to Cart Add to Cart Add to Cart Add to Cart Buying Options Buying Options Price $4.74$4.74 $5.64$5.64 $6.55$6.55 $7.54$7.54 — no data — no data Size 6 inch 10 inch 12 inch 16 inch 16 inch 16 inch Jetting volume 1.3 L/min 1.3 L/min 1.3 L/min 1.3 L/min 1.3 L/min 1.3 L/min Recommended air pump power > 2.5 W > 2.5 W > 2.5 W > 2.5 W > 2.5 W > 2.5 W