why is it important to know how many gallons are in your pond ?
well the first reason is fish health if you don't know how much water you have to treat you could over dose on medication and two you need to know if your filters and pumps are the right size to do the job. below are some calculators that will work it all out for you. calculate volumes inches to center meters and back center meters to feet and feet to inches you can even convert tempretues Fahrenheit to Celsius uk gallons to us gallons , gallons to liters
[ Volume Calculations For Cylindrical ponds ]