Air Pumps

Head height refers to the vertical distance water must be lifted, plus the equivalent resistance caused by pipe friction or length. As head height increases, flow decreases. For instance, a pump rated 1000 GPH at 0 ft head might only yield 500 GPH at 10 ft. To size for a waterfall, multiply the width of the spillover (in inches) by 100–200 GPH per inch at your required head height

As a general rule, your pump should circulate the entire volume of your pond once every hour. Use our handy calculator to see what your pond volume is. Need help? Contact us!