I am VERY new to this and wanted to build a pond about 5000-7500 gal. I have been reading over this site and there is sooo much info but i am lost on really getting started. I am in need of some detailed info on building a pond ie what materials to use and how to build a filter system and exactly step by step how to build a pond. I am more accustomed to the small ponds with the liners. I have never dealt with building a concrete pond. please email me at the email address here with any help plz. I would be very greatful.