Epsom salt

2885 Views 11 Replies 3 Participants Last post by supersmirky, Dec 17, 2008

Commodore 64

Discussion Starter · Dec 13, 2008

Got my scale from ebay, and my ferts from Rex Grigg and mixed up 500mls of each solution.

I didn't have the MgSO4 though, so I'll have to get some of that. I'll be dosing 2 tanks both probably low light, both with DIY CO2. On of them is a 75g, I've got 2 3L fermenting bottles on that one. We'll see how it goes. Drop checkers with 4 dKH solution are in the green...

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Left C

· #2 · Dec 13, 2008

Re: Newbie Guide to PPS-Pro

You need Epsom Salt for the MgSO4 and not pure MgSO4.

Epsom Salt is Magnesium Sulfate Heptahydrate (MgSO4∙7H2O) and it is very easy to find at pharmacies, grocery stores, etc. and it is fairly cheap too.

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Left C

· #4 · Dec 14, 2008

You may have to contact them to see if you are actually getting MgSO4 or MgSO4∙7H2O (Epsom Salt). The dosing amounts will be a bit different.

Many people call MgSO4∙7H2O magnesium sulfate and it is not correct.

BTW, the Fertilator uses MgSO4∙7H2O.

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Left C

· #6 · Dec 15, 2008

Commodore 64 said:
Oh, are the directions in the PPS thread for Epsom Salt? I probably have some of that septahydrate....
edit: just saw the thread below: http://www.aquaticplantcentral.com/forumapc/pps-analysis-feedback/57896-epsom-salt-mgso4.html

Now my macro formula is complete! ...

I'm glad that you found that other Epsom Salt thread.

It is Magnesium Sulfate Heptahydrate and not septahydrate. :yo:

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Left C

· #10 · Dec 17, 2008

I'm glad that you actually got the right stuff.

IMO, if we are going to be using chemicals; we should call them by their real name to avoid confusion.

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