Review on Marine Metal Bubbles Pump B-3: Enhancing Aeration and Oxygen Levels for Aquatic Environments by Jane Cuperus

Works great, as has my old one for 12 years Change the water with rainwater once a day for five days until I've used up all my minnows And the great thing about it This pump if you only have 25 minnows in a bucket you can put a battery in it and it will still run for about 100 hours, if you have 50 minnows in a bucket put two batteries in it and it will still run for about 100 hours Pumps are twice as fast with two batteries Half speed with one