My once-beautiful spider plant is dying. So many leaves/stalks have died that it's about a third the size it was just a few months ago. It's totally wilted and although most of the remaining leaves are bright, bright green--like it's fully watered--more turn brown every day. I moved to a new apartment about four months ago but there's hardly a difference in lighting or the way I'm treating my plants. The spider is one of many and seems to be having the most trouble. I thought they were unkillable! I can't help but wonder if the water in my new place (it's a much older building) has something to do with it? Please help!