Matt ..my cal is 450 too....alk will deplete faster than cal, but just check your mag..it should be between 1350-1500..one thing it does is help stabilize the cal and alkWhat do u guys shoot for I'm usually around 450 but my alk has been dropping every day I have to dose alk but cal stays stable
I can house some of the ones that have lost their color, until you get things right. I'm pretty sure I can bring it back.thanks guys its that my sps are turning green and some would have thier colors and start to bleach slowly until all gone