I have 2 skimmers and a main drain. One skimmer has multiple cracks and repairs. I lose about a quarter inch of water a day. I think rhat skimmer may be the culprit. I am trying bucket test over next few days to figure out more. But it occurred to me that maybe I can take this skimmer offline and just use 1 and the main drain (if it is the problem) . I can rubber stop the inlet but I need to stop the water from going into the skimmer housing at all. Is this possible. My skimmers don't have weir doors anymore. Is that all I need. Is there a way to block it completely at the pool. I suppose as last resort I could take pool level down and use no skimmers and just main drain? Thanks!