Welcome and If I were you I would STOP and read a lot of the info here, Order Bob Lusks book: " Perfect Pond, Want One", read it and then start the build. You will see your goal(s) in a much clearer light. Plenty of experts here to help you just like they have me. I am very happy with my pond,but would have done some things differently. Anyway good luck and have fun and show us some pic's as you go,if you can. Do not hesitate to post any questions here, lot's of good answers.