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Old 05-02-2014, 07:41 PM   #1
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Calc, alk, mag

All of them are seriously low, need to know what to do? And how to do it?
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Old 05-02-2014, 07:55 PM   #2
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Water change. Our salts (Reef salt ) have everything you need.
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Old 05-02-2014, 08:47 PM   #3
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Mag is 1200
Alk is
Cal is 390
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Old 05-03-2014, 02:47 AM   #4
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Mag is low. Calc is low but acceptable. Alk is, well, invisible.
More frequent water changes with some type of reef quality salt should raise them all. But if your heavily stocked with corals or do weekly water changes, then the first thing you need to do is raise the mag levels. That will also slow the precipitation of calcium and carbonates raising both those levels as well.
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Old 05-03-2014, 02:47 AM   #5
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Oops that should've said DONT do weekly water changes
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Old 05-03-2014, 02:51 PM   #6
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Alk was 4
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Old 05-03-2014, 04:02 PM   #7
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I'm gonna guess that that reading is in meq/L. If it is, the conversion gives 11.2dKh. And there is nothing wrong with that number. As none of the other numbers are terrible, I'm guessing that one isn't as well.
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Old 05-03-2014, 04:02 PM   #8
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Well my buddy said they were significantly low. And that he was surprised my corals were still alive
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Old 05-03-2014, 08:18 PM   #9
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Cal is not too low. It is on the low end of ok. But it is still ok.
Mag is low. But not alarmingly low.

Again, I think your Alk reading is in Meq/l. If it is it is on the high side of ok. Many reef keepers will jump to conclusions and assume Alk is in dKH but many test kits use the other.

However, don't just trust me or your buddy. Confirm what scale the measurement is in and then refer to something like this table

http://reefkeeping.com/issues/2004-05/rhf/
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