Inquiry (采购产品): underground water tank I am located in AZ. I am wanting to make a 100 gallon tank for water storeage. What are somethings that I need to keep in mind: wall thickness, inside of tank material, and what about the ani/nsf standard 61? Thanks Ryan 480-694-7096 **** Hidden Message ***** Ryan Robison 85296 USA Company: Liquid Concepts Title: President Phone: 480-694-7096 E-mail: azskimmers@msn.com **** Hidden Message ***** azskimmers@msn.com