I am cringing on even saying this but, given my construction, no rocks involved, and a clean foam bottom what are my chances with a pvc liner? Long story but I need to shave some cost NOW and I need this pond running ASAP so the holding tank on the porch can be removed for upcoming remodel (also read NOW). To me worse case scenario is I lay an epdm in a year or so if i have an issue. Stupid? Maybe ok? I’ll be fine?