After dug from the ground side of the base paste amount, probably in grade 2, to see how much space you use it. after all, the entire covered to hook machine digging a rectangle wider at the pool, order of mud seepage prevention black film, do not let stones or roots are exposed measure the length and width, the amount of the length of .5 meters, buy back, surrounded by a wide base to stay out of the plane out with a cloth measuring tape length and width, and slope manually four weeks to repair a flat bottom.
