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Trevor40 
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 Topic: How often do you test Mag and what do you dose?
Posted: May 24 2013 at 7:13am |
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I recently found out my magnesium was around 1160. I have always had Mag around 1300-1400 until I recently testing. I was convinced to only test Mag every few months but now I'm starting to think differently. I knew something was off when my Ca was testing around 330 and my corals looked stressed.
What are you dosing that's cost affective? Can I just dose Epsom Salt since it is basically the same thing as SeaChems advanced mag?
Edited by Trevor40 - June 03 2015 at 11:27am
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ReefdUp
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Posted: May 24 2013 at 7:20am |
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I dose bulk magnesium sulfate (epsom salts) and magnesium chloride. I dose both in order to balance out the anions.
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Ann_A
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Posted: May 24 2013 at 7:31am |
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I test mag once every three months along with the rest of my chemistry. I also dose Epsom salt weekly as needed. Most of the time my chemistry is right on and mag doesn't need much of a boost.
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Trevor40
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Posted: May 24 2013 at 10:21am |
 ReefdUp wrote:
I dose bulk magnesium sulfate (epsom salts) and magnesium chloride. I dose both in order to balance out the anions. |
Is it harmful to only dose Epsom salt? Where do you get the Mag Cloride?
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ReefdUp
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Posted: May 24 2013 at 10:38am |
Trevor40 wrote:
ReefdUp wrote:
I dose bulk magnesium sulfate (epsom salts) and magnesium chloride. I dose both in order to balance out the anions. |
Is it harmful to only dose Epsom salt? Where do you get the Mag Cloride? |
Plenty of people do it, but it can lead to a buildup of sulfate ions. You can mitigate it somewhat with water changes or magnesium chloride. I buy mag chloride in bulk from Bulk Reef Supply. Mag Flake (deicer) is magnesium chloride, but I don't buy it due to the impurities (but plenty of people do).
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bur01014
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Posted: May 24 2013 at 1:14pm |
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I'd also look at what salt your using, perhaps test a fresh batch of saltwater....if you're doing regular water changes, Mag shouldn't drop a whole lot...my guess is that your salt probably has a mag around 1200....
To raise mag requires a TON of dosing.....during this process your salinity will also dramatically rise, so keep an eye on it....I'd suggest you get a salt with a little higher mag and do a few water changes and things should improve in a few weeks.
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Trevor40
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Posted: May 24 2013 at 2:19pm |
bur01014 wrote:
I'd also look at what salt your using, perhaps test a fresh batch of saltwater....if you're doing regular water changes, Mag shouldn't drop a whole lot...my guess is that your salt probably has a mag around 1200....
To raise mag requires a TON of dosing.....during this process your salinity will also dramatically rise, so keep an eye on it....I'd suggest you get a salt with a little higher mag and do a few water changes and things should improve in a few weeks.
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Unfortunately I think it is the salt I have been using that has low Mag despite their claim of it being high. I will never buy this salt again. Thanks for the advice about the salinity rising, I didn't think of that.
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Trevor40
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Posted: May 24 2013 at 2:22pm |
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ReefdUp
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Posted: May 24 2013 at 4:29pm |
Trevor40 wrote:
Would I use the same amount of Epsom salt as I would the SeaChem Mag supplement? |
Noooo... Here's the link on how to make it: http://www.reefkeeping.com/issues/2006-02/rhf/And here's the calculator on how much to add: http://reef.diesyst.com/chemcalc/chem_calc3.html
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www.reefdup.com
Diving since 2009, reefkeeping since 2007, & fishkeeping since 1987
200g, 75g, & 15g Systems
PADI Advanced Open Water
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