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Old 09-30-2012, 01:01 AM   #1
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low magnesium help

just tested parameters directly after water change; magnesium 900 ph 8.2 alk 6dkh. what causes low magnesium levels?? how do i resolve the problem.
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Old 09-30-2012, 09:16 AM   #2
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I would have to say it's either a testing error or a bad test kit. Unless you happened to get a bad batch of salt, there is no salt that has mag that low. Assuming the average mag in a salt mix is 1250, it's impossible for anything to use up that much mag.
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Old 09-30-2012, 12:40 PM   #3
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what are some reliable test kits? im starting to think thats the case with my calcium kit too as some of the readings dont make sense
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Old 09-30-2012, 12:59 PM   #4
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Yeah, that's really low for any salt. What are you using for testing? What salt?
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Old 09-30-2012, 01:39 PM   #5
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wateranalysis test kit instant ocean salt mixed to 0.25 s.g.
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Old 09-30-2012, 01:39 PM   #6
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sorry 0.025
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Old 09-30-2012, 01:49 PM   #7
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Instant Ocean is a good salt, so I'll put it down to your testing. All salts can vary from batch to batch, but not that bad.
There are a lot of good kits out there, just depending on what you want to pay. I use the Red Sea Foundation Pro kit (tests calc, alk, & mag), and am very happy with it. Other well regarded testing names include Hanna and Salifert.
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