Derbird Posted May 3, 2019 Share Posted May 3, 2019 Good evening, I have recently started testing for the big reef building elements. My numbers have been fairly consistent. Yesterday was Mg 1580 Ca 420 KH 6.7 dkh My new saltwater tested at Mg 1320 Ca 430 KH 7.6 dkh I know the mag is high but should come down with time and water changes. I have no idea how it got so high. My bigger concern is the alkalinity. Ideal range is 8-10. At 6.7 am I in the danger zone or should I opt for stability and let it be for now? I spoke to the gentleman at Cuttlefish today (sorry I can't remember his name) and he said while low it's not critical and reminded me that raising alk will lower calcium . Aren't hard corals fun lol All SPS, LPS and other inhabitants are doing well Thanks for your help Quote Link to comment Share on other sites More sharing options...
Lexinverts Posted May 3, 2019 Share Posted May 3, 2019 KH below 7 is worrisome, even if stable. I shoot for 7.5 - 8 and my calcium is stable between 400-430. I wouldn't worry about having Mag at 1580. It is higher than it needs to be, but people often bring their Mag above that to fight algae problems. 2 Quote Link to comment Share on other sites More sharing options...
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