Pawfly Aquarium 4 Inch Air Stone Disc Bubble Diffuser Release Tool for Air Pumps Buckets Fish Tanks Ponds DWC Reservoirs and Circulation System 2 Pack

Medium Bubbles Produces abundant dense bubbles to aerate your water reservoirs A great way to increase oxygen solubility in your aquarium and enliven the aquatic lives Model ASD100 Jetting volume 12 Lmin Recommended air pump power 4 W Inner diameter of tubing 316 or 38 Great for aquariums DWC systems or ponds Reliable Material Made of mineral material and sintered at a high temperature it causes no effect to the health of your aquatics Keep fish or roots growing healthily Stable in Water Measures 41 D x 07 H and weighs 7 oz which helps it sink to the bottom easily And the 3 suction cups tightly suck the tank to make it sit stably in water 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.