epsom salt for raising MG

[7thheaven]

I have used MG granulate in my CA reactor,but my reefcrystal sea salt is
a low level of MG ( I am not sure but about 1000ppm?)
so I add Seachem MG when changing sea water in a week.
I heard that there is epsom salt in US.
I have never heard about this. what is it?

if epsom salt is a kind of salt(like a word ) Can I put in it with my
Reefcrystal sea salt?


I heard many reefers in us use this, and it is not bad.

[keigo]

epsom salt by itself is a salt name...
it is Magnesium sulfate heptahydrate

this link will help u..
http://web.archive.org/web/200306242...io/default.asp

[7thheaven]

Is it better than Seachem MG?
(I think Seachem MG is more expensive than epsom salt)

[AUSTZEOHEAD]

Epsom salts in Australia at least 40 times cheaper than the Seachem MG supliment in Australia. I would not add Epsom salts all of the time as it will cause your sulfate levels to rise.

Cheers
Che

[keigo]

I order from industral those food grade MgCl and cost me Sg$18.6 per kg only..
alot cheaper then those marine MgCl

[reefaddict]

If your Mg level is low, first check your salinity using an accurate instrument (refractometer is ok, plastic swing arm toys is NOT); too often a Mg problem is due to too low salinity levels. Reef Crystal has good reports of Mg levels.

Then, use a 10:1 mix (in weight) of, respectively, magnesium chloride and epsom salts, which is a much better additive than epsom salts alone. At least you have a balanced residual of chloride and sulfur.

[7thheaven]

If your Mg level is low, first check your salinity using an accurate instrument (refractometer is ok, plastic swing arm toys is NOT); too often a Mg problem is due to too low salinity levels. Reef Crystal has good reports of Mg levels.

Then, use a 10:1 mix (in weight) of, respectively, magnesium chloride and epsom salts, which is a much better additive than epsom salts alone. At least you have a balanced residual of chloride and sulfur.

Thanks..

Where can I get Magnesium chloride ?

How about mixing epsom salt and seachem Mg supplement?

I think it is better than only epsom salt use...

and I found some types of epsom salt.. Which is the proper to put in my tank?

-----------------------------------------------
Magnesium Sulfate Agricultural Grade (Crystal)
MgSO4, Anhydrous, %(min)Wt. 99.0
LOI, %(max) 52.0
Heavy Metals (as Lead). %(max) 0.001
Arsenic ppm (max) 3.0
Selenium, %(max) 0.0030
Boron, ppm(max) 15
Bulk Density, Lbs/ft3 untamped(max) 64
Screen, % USS held on 10 mesh(max) 4.0
USS thru 50 mesh %(max) 10.0
Appearance Colorless crystals, effloresces in warm, dry air




Magnesium Sulfate Technical Grade. (Epsom Salt)
MgSO4, Anhydrous, %(min)Wt. 99.0
MgSO4, %(min) 48.0
Chloride, (as CI.) ppm(max) 300
Bulk Density, Lbs/ft3 untamped(typical) 59
Screen, % USS held on 10 mesh, %(max) 4.0
Screen, % USS thru 50 mesh, %(max) 10.0
Appearance Colorless crystals, effloresces in warm, dry air




Magnesium Sulfate U.S.P. (Epsom Salt)
MgSO4, Anhydrous, % range 99.0-100.5
LOI, %(range) 40.0-520
Heavy Metals (as Lead). %(max) 0.001
Arsenic ppm (max) 3.0
Selenium, %(max) 0.0030
Boron, ppm(max) 15
Iron, % non-parenteral (max) 0.002
Iron ppm, parenteral (max) 0.5
pH (in 20% solution) 5.0-9.2
Chloride (as CI.) (max) 0.005
Bulk Density, Lbs/ft3 untamped(max) 64
Screen, % USS held on 10 mesh, %(max) 4.0
USS thru 50 mesh, %(max) 10.0
Appearance Colorless crystals, effloresces in warm, dry air
Meets Organic Volatile Impurity Limits




Magnesium Sulfate 20% Food Grade Liquid
MgSO4, % 20.00
Baume' @ 40° C 26.6




Magnesium Sulfate 25% Food Grade Liquid
MgSO4, % 25.00
Baume' @ 40° C 32.1




Magnesium Sulfate 26% Food Grade Liquid
MgSO4, % 26.00
Baume' @ 40° C 33.3




Magnesium Sulfate 27% Food Grade Liquid
MgSO4, % 27.00
Baume' @ 40° C 34.8

[7thheaven]

any ideas?