I suspect that there's a leak with my liner pond and need help tracking it down. It is a roughly 3500g pond with a waterfall. When I was running the fall, I was losing about an 1" of water per day. Since stopping the fall, water loss is maybe about 1/8" per day. Weather here is usually mid to upper 70 with about 30% humidity. So highly suspect the leak in is in the plumbing or falls but is it still normal to lose 1/8" per day without anything running or is it possible for leak in liner?