I have been a very consistent 1.024, with a 5 gal ato res. Lately I have had problems keeping skimmer tuned, the foam goes way down some parts of the day, and others way too much....when I was on vacation it went too bubbly and drained the ato...my collection cup has a hose connected to another 5 gal bucket in case of it happening, but I cant seem to get the foam to be consistent.