This Complete Pond Kit (13' x 13') is a in depth garden project geared for the novice with a little experience with water gardening. To figure the size of a pond using a liner it is calculated the following way. Liner size minus 12" for edging "for rock" minus 2x pool depth equals pool size. A pond liner of 13'x13' with a depth of 18" plus 12" for the edge will give you a 9'x9' pond. Pond liners also need protection from sharp objects from the soil so old carpet or padding works great.
The complete pond kit (13'x13')comes complete with the following: