How to Build Your Own Hot Tub Using Pond Liners

Choose a tank for your hot tub that can resist the temperature and volume of the water. The tank needs to be large enough that at least two people can sit inside comfortably. Wood barrels are a common option for hot tubs. Alternately, use a plastic or metal liquid tank, found at local feed stores.

Cover the inside of the tank with a large pond liner. Contour the liner to the tank using your hands. Remove wrinkles and folds with your hands. Attach the pond liner to the edge of the tank using a glue gun. Let the glue dry for a few hours.

Decide on a location for the hot tub. Measure the tank and outline the area to be dug accordingly, with spray paint or flour. Dig a hole, from the center out, large enough to contain the tank. Angle the walls. Fill with sand to create a solid and level base. Place the tank inside the hole. Fill any spaces on the sides of the tank with sand.

Place the snorkel stove inside the tub following the manufacturer's instructions. Fill the tank with water. Start a fire in the stove. Wait a few hours for the water to warm up.