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- Nov 30, 2017
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Hello,
I have a 72 gallon fairly heavily stocked mixed reef tank. I have noticed that my Magnesium levels never seem to drop. I dose BRS 70 ml of calcium and alkalinity each day through a dosing unit but I never have to add any magnesium. I have been testing calcium, alkalinity, and magnesium regularly for the last 3 months and my mag is always at 1500 on the salifert test kits and just tested with Red Sea and was 1600. I do a larger water change about once a month with coralife salt. Alkalinity is typically around 8 dkh and calcium 410. I did battle a precipitation problem before when I was manually dosing. Since purchasing a dosing unit it has improved a lot but I do still get this grey dust in the tank. I have the unit dose Cal and Alk an hour apart throughout the 24 hour cycle. Why is my tank not using up any magnesium?
Thank you,
Jason
I have a 72 gallon fairly heavily stocked mixed reef tank. I have noticed that my Magnesium levels never seem to drop. I dose BRS 70 ml of calcium and alkalinity each day through a dosing unit but I never have to add any magnesium. I have been testing calcium, alkalinity, and magnesium regularly for the last 3 months and my mag is always at 1500 on the salifert test kits and just tested with Red Sea and was 1600. I do a larger water change about once a month with coralife salt. Alkalinity is typically around 8 dkh and calcium 410. I did battle a precipitation problem before when I was manually dosing. Since purchasing a dosing unit it has improved a lot but I do still get this grey dust in the tank. I have the unit dose Cal and Alk an hour apart throughout the 24 hour cycle. Why is my tank not using up any magnesium?
Thank you,
Jason