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Offlineblurt
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Registered: 01/18/11
Posts: 36
Last seen: 5 years, 3 months
Adding dehydrated Sulphate of potash and superphosphate to water.
    #578455 - 08/15/11 08:25 AM (5 years, 3 months ago)

How do I measure them? I am using a basic plant food 5-5-5 which I double up and add liquid nitrogen but I would I measure these dry form plant food to water as I want 5-20-10 I always use a 2 gallon bucket just under the rim plus anything that spills.


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Offlineblurt
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Registered: 01/18/11
Posts: 36
Last seen: 5 years, 3 months
Re: Adding dehydrated Sulphate of potash and superphosphate to water. [Re: blurt]
    #580579 - 08/24/11 03:23 AM (5 years, 3 months ago)

So no experience individuals know how to calculate the NPK of the dry potassium and phospherous?


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Invisiblec99hunter
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Registered: 12/12/10
Posts: 304
Re: Adding dehydrated Sulphate of potash and superphosphate to water. [Re: blurt]
    #580615 - 08/24/11 10:50 AM (5 years, 3 months ago)

If you're doubling up a 5-5-5 and ADDING nitrogen, how on earth are you ending up with 5-20-10 or even think you are going to end up at that? Im a little confused or just outright not understanding your question.


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InvisibleMagashM
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Registered: 04/21/08
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Re: Adding dehydrated Sulphate of potash and superphosphate to water. [Re: blurt]
    #580616 - 08/24/11 10:51 AM (5 years, 3 months ago)

I'm sure somebody should chime in. Myself I've been under the lights since 1985 and have never found a need to do something like this.

I have a little experience. :wink:


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InvisibleStonethM
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Registered: 10/06/08
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Re: Adding dehydrated Sulphate of potash and superphosphate to water. [Re: blurt]
    #580657 - 08/24/11 03:09 PM (5 years, 3 months ago)

I have no experience with this math yet, but I've been reading up on it.  Here's a link to some helpful info on the subject.

http://www.angelfire.com/cantina/fourtwenty/articles/profiles.htm


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OfflineKaptKid
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Registered: 04/20/08
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Re: Adding dehydrated Sulphate of potash and superphosphate to water. [Re: Stoneth]
    #580678 - 08/24/11 04:34 PM (5 years, 3 months ago)

Good read.

I need to learn more about this to.


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InvisibleStonethM
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Re: Adding dehydrated Sulphate of potash and superphosphate to water. [Re: KaptKid]
    #580682 - 08/24/11 04:45 PM (5 years, 3 months ago)

I'll admit, I cheat and use the calculator at the bottom of that page.:yesnod:


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