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•How to find a hole or puncture in a liner:
– Determine if something is puncturing the pool liner.
•Slowly drop food coloring around the pool's ladder or stair strip, skimmer faceplate, and return faceplate.If there is a hole around these areas, you will see the food coloring being sucked into the hole. If the hole isn't near the stair strip, ladder, or skimmer or return faceplates, you will need to find the hole elsewhere in the liner. This process may be difficult, because many liners have a design on the bottom and sides of the pool floor and walls.