My brother and his new wife just moved into her brothers old house(he divorced and they moved out). So when my brother and her got married, her dad gave them the house. Her brother left their AG pool in the back yard. its been sitting uncovered, and unused for a little over a year. There is some water in it..but only about 6", maybe little more. Its all green muck and yucky. She wants us to help her clean it out and scrub it down and refill it. There are no holes that we see or rips. My brother said the filter pump started up when he cleaned it out and plugged it in to see if it had power. So...is it safe for a vinyl liner to a round AG pool(its a metal frame pool...12x24 I think) to sit like that for a year, drain it completely, scrub it down and refill it?