ssalapek wrote:

My husband and I dug a pond this weekend it's about 20ft x 15ft and
around 4 to 5 ft deep. We put a liner in and now we are not sure what
to do about to water supply. Do you have to have a constent flow of
freshwater to prevent it from becoming stagnent.

Not absolutely - it depends on your plant density. Heavily planted ponds
with a low fish load can stay fresh without any regular additions of water.
That tends to be hard to do in a pond the size of yours, though.

--
derek