I have a client that wants a pond built in the courtyard area which is connected to the drive and has a masonary wall around it ...... Iam putting the windsor blocks around it.... but the pond is the Polyurethane black 2 level pond you buy at lowes or home depot or something like that for i think about 150.00 Well i am wandering should I 1. build a wooden frame place the black liner in it and place sand in it then place the pond in it .... then place the Blocks around THAT .....????? ( oh what would i do for the areas in between the blocks and the wood frame??? place another liner and fill it with sand or just fill it up with Rocks( how large?) 2 just build the wall then also place cement to hold the wall up and then slap the liner down then some sand and place pool in it ? 3 How much would you bill them for this an Hr or how ever? its going to take up about 10x15ft.