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Offlinekaijan
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Registered: 07/24/01
Posts: 2
Last seen: 22 years, 7 months
neutralizing pH in peat
    #360162 - 07/24/01 04:40 PM (22 years, 7 months ago)

Is it possible to use Baking Soda as a replacement for hydrated lime when mixing 50/50+?

approximately how much would one have to use?

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OfflineDemosthenes
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Registered: 01/27/02
Posts: 4
Loc: Canada
Last seen: 21 years, 10 months
Re: neutralizing pH in peat [Re: kaijan]
    #563242 - 02/26/02 12:36 AM (22 years, 5 days ago)

My question exactly. Did you ever figure that out?


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OfflinePapa_Bear
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Registered: 08/30/01
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Re: neutralizing pH in peat [Re: kaijan]
    #563253 - 02/26/02 12:47 AM (22 years, 5 days ago)

Lime is an Acid.....use to raise acidity
Baking Soda is a Base used to lower acidity, you can use this if soil is too acidic.

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OfflineAnnoA
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Re: neutralizing pH in peat [Re: Papa_Bear]
    #563317 - 02/26/02 01:51 AM (22 years, 5 days ago)

Papa_bear, you got some things mixed up.

First, peat is acidic, it has a pH from 3-4.

You want to raise its pH, make it neutral=7.

Hydrated lime is a base, it will give you a pH of 13 in a concentrated watery solution.

Ground limestone is also a base, but will give you a pH of 8 even if added in excess.

Ground limestone(aka calcium carbonate aka chalk) is what the mushroom industry uses, NOT hydrated limestone.

Now baking soda is also a base, like you said, and it is used to lower acidity = to raise the pH.

So if you have means of measuring pH please do a test and tell us how much baking soda has to be added to certain amount of peat to raise its pH to 7.

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OfflinePapa_Bear
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Re: neutralizing pH in peat [Re: Anno]
    #563408 - 02/26/02 04:12 AM (22 years, 5 days ago)

Thanks ANNO your right....sorry.

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Offlinecookiewhore
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Registered: 01/03/02
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Re: neutralizing pH in peat [Re: Papa_Bear]
    #563470 - 02/26/02 06:11 AM (22 years, 5 days ago)

So if its a base, why do you spray it on cobweb mold?
Wouldnt this effect the acidity of your casing? and leave it open to even more contams?

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OfflineAnnoA
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Re: neutralizing pH in peat [Re: cookiewhore]
    #563477 - 02/26/02 06:29 AM (22 years, 5 days ago)

>Wouldnt this effect the acidity of your casing?
Yes, it makes it more basic, that?s why it helps against cobweb mold to some extent.

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