If you lived in an area where the water was corrosive and ate the copper pipes you would probably know as it's usually very well known in those areas. so if the line is 15 years old the average is 50 years if not double that. If your worried about it maybe the solution is to put a new pipe off tp the side of the pond as you build it IF your going that deep. .
i WOULD THINK ABOUT A LONGER POND it would be cool if they saw you pull in and swam to greet you as you stepped out of the car.... The wife even stops doing that over the years the fish will do it for ever . lol
i WOULD THINK ABOUT A LONGER POND it would be cool if they saw you pull in and swam to greet you as you stepped out of the car.... The wife even stops doing that over the years the fish will do it for ever . lol