We recently purchased a home with a swim spa and are new to owning a pool/spa. We are having trouble maintaining the water levels on the pool and spa sides and are working to figure out a balance with the valves. However, after a day or two with the pump on, the water level on both sides is way down. When we had the pump off for a few days, the levels seemed to hold. Is it possible we have a valve open somewhere that is draining the pool/spa, or is it more likely we have a leak?