I had a waterfall and pond installed last summer. the installer told me i could lose up to 1/2 inch of poind water a day in very hot conditions. the daily high's are mid to high 70s and i am losing a bit over approx. an inch a day (i measure every day, losing about a half inch at night and a half inch in the day). waterfall is about 8 feet and is in partial shade. I belive the pump is a 6000 gals per hour pump with a 2 inch line. pond is about 2 and half feet deep and about 5 feet by 7 feet of surface water. the waterfall feature has the water running outside and behind the rocks and there is sythetic rock looking materials pumped in all over the place to try to control the flow but does seem to be as effective. (as a benchmark i have a built in swimming pool that loses about a half inch per month due to evaporation and slash in conditions like this) I am trying ot figure out if there is a leak somewhere that can't be seen. Does this pond water loss and size of the pump make sense?