Pawfly 4-Inch Air Stone Disc Bubble Diffuser with Suction cups for Aquarium Fish Tank Pump

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