I used the small cheap pavers on mine when I did the install last year and they are still holding up on my 12x24. Never took it down all year even in the freeze and massive rain we get in yhe northwest. Just turned off the pump when I knew it would freeze. During rain the excess just runs out the corners because it's lower. Had to add salt 1 time during the winter and that was it. Vacuuming it today but water is as clear as when I first filled it and weathered great.
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