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ChinaBoy
Stranger
Registered: 09/12/04
Posts: 225
Last seen: 10 years, 11 months
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pH and stuff
#5739031 - 06/11/06 06:28 PM (17 years, 7 months ago) |
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So, I'm starting to understand the basics better and now wonder on things like pH. What is the ideal pH desired for substrates? And, where does lime come into play. I purchased lime thinking it keeps a buffer for pH around 7. Can anyone shed some light on the subject. Thankyou
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ChinaBoy
Stranger
Registered: 09/12/04
Posts: 225
Last seen: 10 years, 11 months
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Re: pH and stuff [Re: ChinaBoy]
#5739159 - 06/11/06 06:57 PM (17 years, 7 months ago) |
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I did my own research and found that hydrated lime is good for casings to keep a steady pH and to fend off contams. Gypsum does the same, but not as powerful. That is why gypsum would be better for substrates. So, can I find gypsum at homedepot or walmart?
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crakkattak
Would you testthis pill?


Registered: 02/19/06
Posts: 471
Last seen: 14 years, 6 months
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Re: pH and stuff [Re: ChinaBoy]
#5739236 - 06/11/06 07:19 PM (17 years, 7 months ago) |
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I went looking for hydrated lime at 4 garden centers in my location, and every person in the garden centers had no idea what hydrated lime is and none of them carried hydrated lime in their stores
WTF?
Where can I find hydrated lime at? I need to start my casings right away!
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J-to tha R-O-C Knomsayn!
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Cryogenicz
what?


Registered: 07/01/04
Posts: 2,421
Loc: Oregon
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To Sweeten the Soil. its used for lawns.
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eviscerated
drugbunny


Registered: 05/31/06
Posts: 81
Last seen: 12 years, 1 month
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I haven't seen hydrated lime in any stores around here, but you can definetly find gypsum or at least a gypsum mix in the garden supply center of places like Walmart or Menards.
Need to pick some up myself.
--------------------
Looking for: AUS, Cambo, F+, KSS, Lipa Yai, PE, PR, TEX, AF/TR or others // My strains: ARG, B+, HAW, Malay, MDK, SA, TAS, Yos(EQ), Z Strain(GT)
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dudefromaz
That One Dude


Registered: 05/08/06
Posts: 383
Loc: In the Midst of Time........
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if you really can't find some in your area, check ebay and also anywhere online...
peace
-------------------- Remember, the best drug, is a natural drug..... Peace, Fratirnityishly, Smoke Da Stuff, Special Chocolate
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MasFina
Snow Shredder


Registered: 05/08/06
Posts: 788
Loc: Mountains
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find a hydroponics store
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fastfred
Old Hand



Registered: 05/17/04
Posts: 6,899
Loc: Dark side of the moon
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Re: pH and stuff [Re: MasFina]
#5740887 - 06/12/06 07:49 AM (17 years, 7 months ago) |
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Gypsum is what sheet rock is made out of. So if you can't find any just punch a hole in the wall and use some of that. 
-FF
-------------------- It drinks the alcohol and abstains from the weed or else it gets the hose again. -Chemy The difference between the substances doesn't matter. This is a war on consciousness, on our right to the very essence of what we are. With no control over that, we have no need to speak of freedom or a free society. -fireseed "If we are going to have a war on marijuana, the least we can do is pull the sick and the dying off the battlefield." -Neal Levine (MPP) I find the whole "my drug should be legal but yours should be illegal" mindset disgusting and hypocritical. It's what George Bush and company do when they drink a cocktail and debate the best way to imprison marijuana users. -Diploid
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RogerRabbit
Bans for Pleasure


Registered: 03/26/03
Posts: 42,214
Loc: Seattle
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Re: pH and stuff [Re: fastfred]
#5741223 - 06/12/06 10:27 AM (17 years, 7 months ago) |
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Correct. You can go to home depot or similar and just buy a sheet of drywall to use for the gypsum. Remember, gypsum contains both calcium, a sweetner, and sulphur, which is sour. Together, they work to hold a steady ph and avoid radical swings.
Gypsum is not a substitute for lime. You still need hydrated(water soluable) lime to get the ph right in the first place. I shoot for a ph of 8 to 8.5 to start, knowing that as the mycelium colonizes the substrate, the metabolytes which are acidic will lower the ph to around 7 at the time of fruiting, which is perfect.
In the US, Best Hardware stores carry hydrated garden lime. If your local store doesn't have it, you can order it online from www.doitbest.com Just go to that site and use the site search to type in hydrated lime. They also have gypsum. RR
-------------------- Download Let's Grow Mushrooms semper in excretia sumus solim profundum variat "I've never had a failed experiment. I've only discovered 10,000 methods which do not work." Thomas Edison
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