man nice work J i have tried both and I would agree liner is faster. I redid mine with concrete but I never thought to reinforce it with any thing so it cracked on me any suggestion? I put another thick layer of concrete and now in the process of sealing it, I bought this stuff called pond shield but is extremely $$$$ like 300 a gallon, so some one told me that I could use Drylok........how do I attach a pic??