How big is the above-ground pond?

The size of the above-ground pond was determined based on the volume required to maintain adequate thermal mass for each dome size. Approximate volumes for the water tank are:

•    15′ Growing Dome ~ 750 gallons
•    18′ Growing Dome ~ 800 gallons
•    22′ Growing Dome ~ 1,150 gallons
•    26′ Growing Dome ~ 1,300 gallons
•    33′ Growing Dome ~ 2,600 gallons
•    42′ Growing Dome ~ 3,200 gallons

We also highly recommend you have a variety of aquatic plants in your above-ground pond to prevent algae and provide nutrients for your fish.