But is it true that we should expect our liner to not fit right off before filling, be somewhat small and some gap between the bottom/coving until the liner stretches or should it fit right at the time we begin filling, with only minor barely or unnoticable stretching? (we intend to use the shop vac to bring it to the walls before and as we fill) The water out of our hose is ALWAYS no more than 54 degrees being rural well water and ground temp. It would be filled during the day anyway, hate to risk the hose coming out and swamp the yard, wash out the landscaping fill or anything similar. thanks.