Magnesium Chloride BP

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hi guys. when i bought my tank the guy i got it from gave me a tub of magnesium chloride BP (looks like sugar)
i'm not sure what it would be used for and i have no idea how to dose it.
i know magnesium is used by SPS corals for growth. what about LPS's and softies?
how should i dose it? should i dose it?
PLS help?
 
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is this not epson salts?

If so pick 'n pay sells 500g for like R10...red box by robertsons
 
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i dont think so... this is from a pharmacy.
got a big label on it saying "CAUTION hygroscopic" whatever that means.
also got the following printed on it.
MOL.WT: MgC12,6H20 = 203.3

from my school days i'd say that is its weight in mols.
so thats totally useless.
and the element name gives nothing cos we know its mag chloride and that in dosing it you mix it with RO water.
am i right?
anyway, i dont have any sps's and a few softies so my guess is that i have very little need for it.

if anyone is keen, its full and i def wont be needing it.
i'll swop a frag for it?
 
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Hey Furbz...

Tank's looking good, come on every now and again to check things out...
Here's a "supermarket" additive spreadsheet I did, I can't really verify it's accuracy, but did quite a bit of reading to put it together...

You can mix Magnesium Chloride with epsom salts for magnesium, if I remember correctly epsom salts increases your sulphate levels where as Magnesium Chloride has no side effects, or something like that...

Hopefully this helps a bit...

Oh yea... forgot to mention... After I started adding the Mag Chloride, my coraline grew like wild fire...
 

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Glassworld. But i'm not sure if they courier to KZN. I've ordered a whole lot of stuff from them
 

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