My spa is finished with ceramic tile. I know it's not advisable to leave a plaster pool drained, but could I damage the spa tile by leaving it drained? I have a leak somewhere in the spa plumbing, and I'd rather not waste a bunch of water while I'm looking for the stupid leak. I don't plan on doing any really invasive digging until after Memorial Day weekend, so it'll probably remain drained for a week or so, unless I find the leak somewhere easy to fix.