I have searched the forum and can not find what I am looking for (maybe I just do not know the right word combination to use ) But I am losing about 1 1/2" of water a night. I have checked my plumbing and there is no leak from that. I know I can use food coloring to squirt around where I "think" the leak is, but I have no idea where it is. How do you narrow down the area to check? There is a damp spot on the ground in one area, but it is a pretty big area, do you just start squirting the food coloring around, working your way around the pool?