Last fall when I closed my pool I actually got some help from my family. But only to speed things up so that I could do something on someone else's list which meant that I had to get the cover on before I had all the other steps out of the way. Normally, I connect a hose to one of the returns on the stairs and shut all of the other returns and then use the pump to lower the water level, then I shut down the power, disconnect all the plumbing at the pad and blow everything out, then put the cover on. Instead, this time I used the help to get the cover on while I was lowering the water level, then shut down the pump and had to call it quits for the day. Two days later when I went to finish up I realized that I had never shut off the power and since the hose was still connected the pump emptied the pool while it was going through it's normal operation for the day. I refilled the pool as quickly as I could back to my usually winter level (took about 18 hours) but it dropped down to about 24 to 30 inches below the coping fairly quickly. I left it through the winter and just filled back up this weekend. The water was just about 2 inches below the top of the lights when I started and as I filled it, I went around with a pump sprayer with some red food coloring in it and checked around the stairs and the lights but couldn't find anything. I filled the pool up to about 1 1/2 inches above the bottom of the skimmers and left it overnight. When I measured it this evening, it had dropped 3/8". With my pool, that is about 200 gallons. That means I'm losing about 10 gallons per hour or about 20 ounces a minute which is a pretty slow leak. Is that something that a dye test can pick up? I don't think it's in the bottom drain piping since I could hear the air hissing out when I pulled the cap off the line to reconnect the equipment. I also am seeing the pump becoming empty and can hear air bubbling in the filter when the pump is off so I'm assuming that I need a new check valve as well. And my Bravo Fury has decided to only run for a few minutes at a time too just to make me feel extra happy to own a pool.