Basic 8m x 3m Underlay

I actually wanted the luxury underlay but was out of stock, was a big half price sale on this so grabbed some. Wasn’t sure if it would be adequate, however i managed to use two layers where the pond would take the most stress and made doubly sure the two pond holes and linking streams were as smooth as possible before laying it...zero reason to think it will not do what it’s meant to do fir years to come.