Pawfly 4 Inch Air Stone Grey Mineral Bubble Stone Bar Diffuser Bubbler Airstones for Air Pump Aquarium and Fish Tank 2 Pack

Model AWB100 jetting volume 25 Lmin recommended air pump power 2 W standard ID airline tubing 316 inch Ideal for small fish tanks or aquariums 2 Bubble Effects Produce a cascade of fine bubbles under less air input and medium bubbles under strong input Both form a rectangle bubble wall to increase oxygen level in your aquarium Small but Enduring Each bar measures 4 L x 15 W and weighs 12 oz Come with an suction cup clip which keeps it lying steadily without floating in the water Reliable Material Compressed with sand and wrapped with a plastic base it causes no effect to the health of your aquatics Help keep your fish growing healthily Easy to Use Soak the stone completely in water for 1 hour before use Clean them regularly with a brush as they get clogged after weeks or months of usage.