Hey guys, I think its a bit of both. We haven't gotten any rain in a few weeks. Had a chance then it left also. I have seen mine ramp up just a bit, but like setter said, I have less water per inch surface area so it would stand to reason the vertical drop might be faster. Now I didn't think about what John stated. Thats a good point, we have had fog most every morning the last couple of weeks, so I bet my evap is going at night also like you said. I'm just over .5" a day. Was hovering right on .5" a day when we were in the high 90's. Maybe my seepage is around 1/4" but since we are seeing the evap at night, maybe it has increased a bit over 1/4" now? Good thoughts John!