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Re: Potassium alternative?
- To: Aquatic-Plants at actwin_com
- Subject: Re: Potassium alternative?
- From: Paul Sears <psears at nrn1_NRCan.gc.ca>
- Date: Mon, 24 Jun 2002 10:20:51 -0400 (EDT)
- In-reply-to: <200206240748.g5O7m2I25178 at acme_actwin.com> from "Aquatic Plants Digest" at Jun 24, 2002 03:48:02 AM
> From: "Bobby Joseph" <koonkoon327 at hotmail_com>
> Subject: Potassium alternative?
> Alright, my first post. I've been looking for k2so4 in the houston area and
> can't find it. Have a pharmacy friend, and he says they have no k2so4.
> Looked in several garden and fertilizer shops, no one has heard of sulfate
> of potash, or of all green or green all, whatever it is.
Hydroponics stores are the best bet.
> Went to this one
> store they had this fertilizer called k-meg made by the american plant food
> corporation. it's npk is 0-0-22. it says for contents: 22% soluable
> 22% sulfur
> 11% magnesium
> does it sound good enough as a substitute?
It sounds like a mixture of potassium and magnesium sulphates.
The amount of sulphur there is exactly right. In fact, it would be very close
to a 1:1 mix of K2SO4 and MgSO4 on a molar basis. That would account
for 95% of the total mass of the mixture. The rest could well be water of
crystallysation. MgSO4 usually comes with a lot of that, so if it is
a mixture and not a double salt, you may find it becomes a hard lump
if it gets wet. It should work just fine.
I'll add the usual comment - one thing it does _not_ contain
Paul Sears Ottawa, Canada