I think I know the answer to this unfortunately. Last fall we put up our 33' round Strong Colosseum 54” pool. Love the pool nice resin rails top and bottom the bottom rails are 2.5” tall so they never let the dirt touch the steel walls. Now for my problem.
We used sand for our bottom and cove. It has kept water all winter but today I went out to check on how it did over the winter. I looked at the coves and on one side of the pool it appears the coves have disappeared on 4 or 5 sections about 2 feet long. I suspect that since it sits on very heavy clay soil so heavy and packed that the bobcat struggled to even take 1/4 in off. That runoff may have seeped under the bottom rail and pulled the sand out since the wash out is on one side only. Since it was installed I have place 2 inches of dirt around the bottom of the pool since the bottom rail is 4 inches tall on the outside of the pool. My questions are:
1. Do I need to drain the pool and fix the coves? THe liner is not sticking under the rails. (I'm thinking yes)
2. If I do what temperature should it be when I drain the pool. It is a overlap liner. I positive I can fix the pool coves and start filling it the same day. But I know it will take 3 days to fill it again.