Welcome to the forum!

If you will sift thru the forum you will find various threads on nearly every different topic that has to do with ponds, whether building, restoring, maintaining, or managing the fish in one, there are threads that cover nearly everything.
Without a little more info there is going to be very little anybody can advise you on directly, unless I missed something.

All the really good ideas I've ever had came to me while I was milking a cow.