We recently drained our pool after a pump breaking it took months to find time to fix it. The pool was too green and muddy to filter so we drained the pool and power washed it. After washing there are two spots that won't dry. It is like water is leaking through the wall into the pool. We have suspected a pool leak for a while but didn't expect the leak to not have any visible cracks. Is this something to be worried about? Is it patchable/fixable or needs complete resurfacing? Thanks for your opinions.