So bucket 1 is 1160 ppm/ec 1.71, bucket 2 is 1210/1.78, the next swap out is sitting at 1200. Just got my meter, a Milwaukee. mw802 . So is any of this good bad ... relevant at all? Further reading on other sites, I am seeing folks tolk 300 ppm, 900, 1800. What do the numbers mean?