Hi everyone, I finally get to start building my new setup. I'm turning a small closet into my tank's utility room and was considering waterproofing the whole thing, first thought was pond liner. DT will only be 57G and maybe another 30 in filtration. 6" of pond liner would absorb the most diabolical leak short of DT bursting. I thought I'd come in here and ask in case there were better ideas out there?