Ca Reactor - Alk rising, Ca + Mg dropping

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Fisherman Joe

Fisherman Joe

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Tested again and the dkh is 7.7 now!?!

I triple checked earlier with a salifert kit. I washed the vials with RO and got fresh sample of saltwater to test. It's the strangest thing. Anyway the kH seems ok now.

Would you worry about the Mg being 1440?
 

Freshwater filter only or is it? Have you ever used an HOB filter on a saltwater tank?

  • I currently use a HOB filter on my reef tank.

    Votes: 38 28.4%
  • I don’t currently use a HOB filter on my reef tank, but I have in the past.

    Votes: 27 20.1%
  • I have used a HOB on fish only or quarantine tanks, but not on the display tank.

    Votes: 31 23.1%
  • I have never used a HOB on a saltwater tank.

    Votes: 36 26.9%
  • Other.

    Votes: 2 1.5%
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