My losses were 5.7 inches in the past week. I still have a leak somewhere, but don't see wet spots anywhere near the pond. I think evaporation has been less than 1/4 inch per day. My minnow pond right next to the main pond has lost about an inch and a quarter. All I can tell the Soilfloc did for my pond was stop one seep through the dam where I knew it wasn't compacted well. I applied it on that spot very heavily, about three times the recommended rate. But, that was actually a small seep, volume wise. My daily losses are still about 80% of initial losses. It's cheaper for me to pump periodically than to buy something that might or might not work. At least, with leaking and pumping, I am getting new, clear, water in and nutrient laden water out.