First time pool owner. We hired a pool company to open our pool for us for the first time. They are shocking the pool and leave the pump running as usual. Over the night, we observed the water level dropped from half to near the bottom of the skimmer line and the pump got almost no water. Shall we fill in water to complete the shock or fix the leak first?
It's an old pool. The skimmer is made out of concrete and I suspect it's at least one of the leaks. I'm attaching a picture of it. The dark ring is concrete with small stones, looks stable though. Does my guess make sense? Can I fix it by coating/patching the skimmer structure? Can I install a skimmer liner on top of the old one?
Thanks in advance
It's an old pool. The skimmer is made out of concrete and I suspect it's at least one of the leaks. I'm attaching a picture of it. The dark ring is concrete with small stones, looks stable though. Does my guess make sense? Can I fix it by coating/patching the skimmer structure? Can I install a skimmer liner on top of the old one?
Thanks in advance
Continuing with a 
