how deep does a goldfish pond need to be
A goldfish can grow up to 12 inches(30cm) plus. The minimum size pond is 8 feet X 6 feet and 3 feet deep(2.5m X 2m X 1m). The larger the pond the better for your goldfish. Being tempted to economise, some people end up building 2 or 3 ponds to get to the desired size.