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nne-DeMiTri
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Powder vs. liquid gypsum
#19396080 - 01/09/14 09:31 PM (10 years, 1 month ago) |
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So I keep reading powder over liquid from very reliable resources and I am not doubting them, I was just wondering why? RR I know you choose powder over liquid what is the reasoning to this price, performance, applicability?
-------------------- How frank gets shit done! save yourself some time and click this and Many Flushes
Edited by nne-DeMiTri (01/10/14 08:44 AM)
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karode13
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Re: Powder vs. liquid gypsum (moved) [Re: nne-DeMiTri]
#19396805 - 01/10/14 12:28 AM (10 years, 1 month ago) |
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This thread was moved from The Psychedelic Experience.
Reason: Cultivation questions are better suited here.
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nne-DeMiTri
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Re: Powder vs. liquid gypsum (moved) [Re: karode13]
#19464446 - 01/23/14 07:51 PM (10 years, 1 month ago) |
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it will forever remain a mystery
-------------------- How frank gets shit done! save yourself some time and click this and Many Flushes
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bodhisatta 
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Re: Powder vs. liquid gypsum (moved) [Re: nne-DeMiTri]
#19464480 - 01/23/14 07:57 PM (10 years, 1 month ago) |
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I think its just plain easier to find powdered gypsum and likely cheaper plus it wont throw off your field capacity if you already have your measurements dialed in.
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nne-DeMiTri
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Re: Powder vs. liquid gypsum (moved) [Re: bodhisatta]
#19464505 - 01/23/14 08:03 PM (10 years, 1 month ago) |
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What I was considering was soaking my coir in LG they carry it at my local garden supply store.
-------------------- How frank gets shit done! save yourself some time and click this and Many Flushes
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bodhisatta 
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Re: Powder vs. liquid gypsum (moved) [Re: nne-DeMiTri]
#19464540 - 01/23/14 08:12 PM (10 years, 1 month ago) |
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Quote:
nne-DeMiTri said: What I was considering was soaking my coir in LG they carry it at my local garden supply store.
probably be just fine.
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RogerRabbit
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Re: Powder vs. liquid gypsum (moved) [Re: bodhisatta]
#19464813 - 01/23/14 09:00 PM (10 years, 1 month ago) |
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Gypsum is ground from solid rock. There is no liquid gypsum. If someone mixed some with water, they're just playing a marketing game. Get the real stuff. I can get all the loose bulk gypsum my pickup truck can carry for $200. An 80 pound bag is a bit more expensive than buying in bulk, but only $8. 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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nne-DeMiTri
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Re: Powder vs. liquid gypsum (moved) [Re: RogerRabbit]
#19464922 - 01/23/14 09:24 PM (10 years, 1 month ago) |
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I bought a 50 lb. bag just the other day $5. This was more of a hypothetical. Thanks RR.
-------------------- How frank gets shit done! save yourself some time and click this and Many Flushes
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Stromrider
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Re: Powder vs. liquid gypsum (moved) [Re: nne-DeMiTri]
#19464939 - 01/23/14 09:27 PM (10 years, 1 month ago) |
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I've always bought pelitized gypsum. When I'm hydrating my sub I mix it in with the water before adding the water to the sub. I figure it gets more evenly distributed this way but it probably don't matter
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RogerRabbit
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Re: Powder vs. liquid gypsum (moved) [Re: Stromrider]
#19464953 - 01/23/14 09:31 PM (10 years, 1 month ago) |
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Pellet gypsum is powder gypsum with a water soluble bonding agent added. They make it so farmers can use automated machinery to spread it on large fields. If they tried to spread powder gypsum, it would jam up and clog the machinery.
If you can get it, powder is probably better simply to do away with whatever the bonding agent is. 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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Psilicon
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Re: Powder vs. liquid gypsum (moved) [Re: nne-DeMiTri]
#19464956 - 01/23/14 09:32 PM (10 years, 1 month ago) |
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You can get more gypsum into a substrate if it's powdered than you can if it's dissolved. It's a sulfate, so it doesn't dissolve very well in the first place, but it's an extremely fucking weird one that gets less soluble as the water gets hotter. That means that if you pasteurize your substrate some of your dissolved gypsum is going to precipitate anyway, leaving no difference at all in effect but a lot of difference in cost because you paid someone to put a handful of gypsum in a bucket of cold water, stir, and then ship the whole mess to you in a bottle.
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Stromrider
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Re: Powder vs. liquid gypsum (moved) [Re: Psilicon]
#19464971 - 01/23/14 09:36 PM (10 years, 1 month ago) |
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I hard a hard enough time finding pelletized gypsum  Probably just have to settle with it
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bodhisatta 
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Re: Powder vs. liquid gypsum (moved) [Re: Stromrider]
#19465183 - 01/23/14 10:16 PM (10 years, 1 month ago) |
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Yea gypsum is somewhat rare around here most hardware stores and garden stores dont have a good selection, home brew store does but it's a small bottle for the same price as a 40lb bag.
A lot of things have a surprising tendency to dissolve better in cold water than hot water. Like Lye(NaOH). Has to do with the spheres of water that form around and make hydrate crystal complex with water and how the polarity changes as temperature changes due to the sway between entropy and equilibrium or something like that
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