We have a 24-in above ground pool. We opened the pool in April and have had to top off the water every 3 to 5 days. We noticed sanding water around the side of the pool and to the back We found a tear in the liner that we patched and a small hole that we have patched we continue to see loss of water. We turned off the pump and as soon as the water level got below the skimmer it seems as the leaking has stopped. Is there a way to tell if there is a hole in the liner above the water level or could it be something else?