Thanx Mr.RickCorey your idea is quite practical. Tarev ,your evoporation method with pots is also used by many people but as u said it will create very less evopotation but i must tell u that I am also working on earthern pots and jute cloth for evoperation and will discuss later after the practical is done . Mr.Ken Ramsey please read Mr RickCorey idea which is great I think so please share your views. Your idea which u gave in the previous conversation I applied. (Planting trees around).