How do I lower my calicum in my reef tank?

pondy

Member
Just wondering how I can lower my calcuim in my tank, It is around 540. I dosed it with purple up but since I have tested i have stopped.
 
N

nereef

Guest
stop with the purple up unless you have low Ca. a water change with a lower quality salt mix (IO) will bring down the average Ca in the tank.
 
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