Who Gives A Fish Forums

Thanks for the advice, everyone. I'll try slowly raising to 9 dKH and see how the SPS respond. My calcium's at 410, mag at 1300, so those should be in line. Appreciate the help!

What's the best alkalinity level for a mixed reef tank? I've heard conflicting advice, some say 8 dKH, others push for 10. My SPS seem stressed at 8, but LPS are fine. Running a 75-gallon with T5 lighting, weekly 10% water changes, and a protein skimmer.