Who Gives A Fish Forums

I swear by Salifert for magnesium testing. It's accurate and easy to use. How's your coral coloration been with your current levels?

Yo, reefcare, you're spot on about magnesium being key. For SPS, you wanna keep it between 1250 and 1350 ppm. Anything lower and they'll start looking sketchy. I run mine at 1300, and my Acros are popping. What's your alk and calcium at?