How To Find A Leak In A Pool Liner With Food Coloring. Can i add food coloring to my pool to trace a leak through a valve? Step #2 — position the bucket in your pool
First, get sure that your pool is completely full; When the water quiets, place a drop or two of colored water into the pool. For holes on the side of the liner, look for a small stream of water seeping from the hole.
My pool is fine but my spa is.
A dry patch can be used if the hole is higher than the water level. Look for a hole in a vinyl liner with food coloring. If the pool stops draining, the leak is somewhere along the top of the pool. With the pump off and then with it operating as usual.