i want to make a pond 48"x24"x24" hold about 110 gallons when a few inches from top, i was thinking 1/2" plywood inner wall 2x4 framing with tongue and groove knotty pine wall boards for outer, i'm not sure how to frame the walls, i was thinking like walls in a house, or should i just do a line of spaced out horizontal 2x4's going down the wall and mitre the corners. i'm just not sure what would be strongest or am i worrying to much, i know 100 gallons or so is not super heavy
thanks
thanks



