Magnesium sulphate where from

[Frenchi]

Morning ppl
Where do you guys buy your magnesium sulphate please?
I'm in the uk

Thanks

Mick


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[allan angus]

epson salts at supermarket ? 🙂

 

[Frenchi]

epson salts at supermarket ? 🙂

Nice one thanks very much... Is it the same consentrate as the Ei dosing ? 🙂


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[Edvet]

http://en.wikipedia.org/wiki/Magnesium_sulfate

 

[Frenchi]

http://en.wikipedia.org/wiki/Magnesium_sulfate

Thanks for the link I do appreciate it but that means nothing to me, I cannot understand it... Is it the same consentrate ?




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[Frenchi]

The reason I ask is I buy the Ei dosing kit from APF and it is great but to buy the magnesium sulphate it's cheap enough but the delivery costs £6.99.. That's double to the cost of what I'm buying???


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[G H Nelson]

Same stuff Frenchi

 

[Frenchi]

Same stuff Frenchi

Top man thank you


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[allan angus]

yes its the same thing 🙂 boots do it cheap as well 🙂

 

[Rasbora]

I got mine from Aquarium Plant Food - quick and pretty cheap for a huge bag. http://www.aquariumplantfood.co.uk/fertilisers/dry-chemicals/dry-salts.html

 

[Frenchi]

Cheers guys 5kg's for £9.99 at westlab ... Thanks very much for that info 🙂


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[dw1305]

Hi all,
You can buy Epsom Salts, even if it is sold as "MgSO4" it will actually be "Epsom Salts" (MgSO4.7H2O). This is because magnesium sulphate is hygroscopic, and will pick up atmospheric water until it is in the stable heptahydrate (Epsom Salts) form.

Epsom Salts have ~10% Mg, the workings are in the quote from <http://www.ukaps.org/forum/threads/dark-veins-is-it-magnesium-deficiency.31856/>

Element & RAM ("Relative Atomic Mass")
Mg = 24
S = 32
O = 16
H = 1

24+32+(4*16) + (14*1)+(7*16) ~ 24+32+64 = 120 + 14+112= 126 ~ 120 + 126 = 246 (this is the RMM "Relative Molecular Mass" of MgSO4.7H2O)

So "Epsom Salts" have 24/246 ~ 10% Mg.
10g of MgSO4·7H2O, supplies 1g of Mg.
1g of Mg (from 10g MgSO4·7H2O) in 1litre of H2O = 1000mg in 1,000,000mg = 1000ppm Mg sol.
1g in 10litres = 100ppm Mg
1g in 100litres = 10ppm Mg

cheers Darrel

 

[Frenchi]

Hi all,
You can buy Epsom Salts, even if it is sold as "MgSO4" it will actually be "Epsom Salts" (MgSO4.7H2O). This is because magnesium sulphate is hygroscopic, and will pick up atmospheric water until it is in the stable heptahydrate (Epsom Salts) form.

Epsom Salts have ~10% Mg, the workings are in the quote from <http://www.ukaps.org/forum/threads/dark-veins-is-it-magnesium-deficiency.31856/>
cheers Darrel

That's good to know ... Saves quite a bit of money too ... Everything is so expensive ... 🙂


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[sciencefiction]

I bought it very cheap from an online pharmacy, with free delivery cause I was too lazy to ask around, it cost me €1.50 for a big enough jar 🙂

 

[DrRob]

Was about to suggest the same, I source it through work by the 5kg bag for next to nothing.

 

[ian_m]

I have sourced Epsom Salts from Ebay, Boots chemist & AquariumPlantFood.co.uk.

 

[Frenchi]

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