riddle me this. bought my first coral two days ago (a few threads on that debacle out there), but the LFS told me to start dosing Ca. i measured my alk and my Ca, and found that the alk was good at 9dKH / 3.2meq/L, and that my Ca was waay low at 260. Last night i added 3ml of the Kents Ca stuff. this morning, i measured my Ca again, and it was at *drum roll please* - waay low at 260. WTH? bottle reads to add 1-5mL/50G. is this a magnesium problem? am i just not adding enough? did it all get eaten during the course of 8 hours?