The Marine Metal Products Bubbles Aerator is able to aerate up to 8 gallons of water at 1.0 STL per minute. The weighted air stone with 30" silicone air line tubing gives you the ability to move the aerator around as needed. FeaturesAerates up to 8 gallonsPrecision motor runs +/- 100 hours on 2 alkaline D cell batteriesPumps 1.0 STL/minuteImpact water resistant case with neoprene seals and rubber booted switchBeryllium copper contacts for longer battery lifeWeighted air stone with 30" of silicone air line tubing enclosed in pumpLarge adjustable stainless steel clip for attaching to any containerDry Box (clam shell package designed to keep pump dry while in use)Designed for fresh and saltwater use