Well I posted a while ago about my pool mysteriously emptying itself and upon further investigation it does have a leak, the joy! I've got a massive pool of my daughters from last year that I was hoping to use for them in the spring and as winter is setting in I guess I could patch this one and keep topping it up. But I now have to make a decision I can either extend the pen and put a large deep pool in or keep it where it is and make it slightly bigger. Would a pond vacuum suck out the water for me? I've tried different types of syphons but they don't work!