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shymanta
Mad Scientist


Registered: 01/27/05
Posts: 907
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Crushed Oyster Shell for 50-50 plus??
#5320148 - 02/20/06 02:25 PM (17 years, 11 months ago) |
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I just got some crushed oyster shell and hydrated lime from Mycosupply for a 50/50 plus casing and was wondering how the oyster shells should look. The site says "Our oyster shells are crushed, screened and properly prepared."
Here is a picture. The biggest peices are pea-sized.

Is this the right size for a casing? It looks a little big to me. What do you guys think?
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musher_420
Stranger

Registered: 08/01/05
Posts: 2,691
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: shymanta]
#5320161 - 02/20/06 02:28 PM (17 years, 11 months ago) |
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I'd crush them up a little more. Coffee grinder, blender maybe or I'm sure you could smash em with a hammer..
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hyphae
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: musher_420]
#5320230 - 02/20/06 02:53 PM (17 years, 11 months ago) |
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Oyster shell breaks down slowly (very) so you'll want oyster shell flour for best results anything larger just isn't efficient. Oyster Shell "Flour" $2 for 1lb. a hell of a deal Mycosupply is not a good source for oyster shell if thats what they sold you. And don't let them tell you it helps with a casings structure as thats simply BS.
-------------------- Getting the most out of your casings!, A pinning strategy. Oyster Shell "Flour" $2 for 1lb. a hell of a deal Not what is overlay but rather what overlay is Gas Exchange vs. FAE "We all have priorities. I used a closet once setup a nice little lab trouble was all the shit that was in there ended up in the bedroom that pissed off the GF then I ended up dumping her as she was getting in the way of my sterile culture technique! Ya I got priorities too!!!"
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shymanta
Mad Scientist


Registered: 01/27/05
Posts: 907
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: musher_420]
#5322328 - 02/20/06 10:52 PM (17 years, 11 months ago) |
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Well, I sifted the oyster shells and came up with enough "flour" to make a casing. For my next casing I'll have to grind them up. A coffee grinder seems a little weak for this stuff, though.
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Hypercube
80 SRM



Registered: 12/18/05
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: shymanta]
#5322414 - 02/20/06 11:08 PM (17 years, 11 months ago) |
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On that note, who knows how to make flour out of shells?
I've got the same problem.
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agar
old hand


Registered: 11/21/04
Posts: 9,056
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: shymanta]
#5322502 - 02/20/06 11:27 PM (17 years, 11 months ago) |
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http://www.groworganic.com/item_F1850_OysterShellLime50Lb.html
 
If you can ever find this product, BUY A BUNCH  (I bought 5 bags, last trip through there)
Best, I have EVER FOUND. ($7 per 50 lb bag).
Unless you have a jaw/cone crusher, capable of handling gravel. 
Crushing oyster shells is a PITA.  You will WRECK coffee grinders, blenders & the like.
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Edited by agar (02/20/06 11:43 PM)
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onetime
onetime


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Re: Crushed Oyster Shell for 50-50 plus?? [Re: agar]
#5322511 - 02/20/06 11:31 PM (17 years, 11 months ago) |
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it seems that myco sypply needs to edit there site to reflect what properly prepared means. Some one might want to mention that to them. maby they had it drop shiped or something and it was the worng thing.
--------------------
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kanpan
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: onetime]
#5322560 - 02/20/06 11:51 PM (17 years, 11 months ago) |
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I bought the same shit from them about 8 months ago. I still have the whole bag in the basement. In my opinion it is worthless.
Enjoy
-------------------- "Love is the Law" "Love under Will"
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Doctor
Strangled



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Re: Crushed Oyster Shell for 50-50 plus?? [Re: onetime]
#5322562 - 02/20/06 11:52 PM (17 years, 11 months ago) |
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Email them about it, I am sure that Myco Supply wouldn't want to sell something that's not usable as much as you wouldn't want to buy it. You may even get yourself a refund.
Edited by Doctor (02/22/06 02:35 PM)
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xaxphaanes
Mycologist


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Re: Crushed Oyster Shell for 50-50 plus?? [Re: Doctor]
#5322693 - 02/21/06 12:38 AM (17 years, 11 months ago) |
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why use oyster shell hydrated lime is better because it is water soluble were oyster shell isn't very soluble.
-------------------- "Anything i say is fictional" what you should look for in manure
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lardnar
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: xaxphaanes]
#5322695 - 02/21/06 12:42 AM (17 years, 11 months ago) |
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oyster shell is used (look at agar's post) sometimes in addition to hydrated lime. The lime is great for NOW, the oyster helps for future flushes
-------------------- If your soul is sence this life is lost ...
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diablovt1125
Mushroom Man



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Re: Crushed Oyster Shell for 50-50 plus?? [Re: lardnar]
#5322780 - 02/21/06 01:55 AM (17 years, 11 months ago) |
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Hydrated lime is often too strong, one must be very careful about how much is used or you'll end up damaging the Myc.
Oyster Shell can only buff the PH so much (I think its like around 7 or 8) and Lime can easily over do it!
They will both work in the end though, you just gotta be more careful with hydrated Lime (make sure its HI-Yield Hydrated Lime)
someone correct me if wrong about any of this...
-------------------- Know yourself, know your substance, and know your source
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agar
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: xaxphaanes]
#5322869 - 02/21/06 02:53 AM (17 years, 11 months ago) |
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Hydrated lime is fast acting, but short lived.
Fine oyster shell flour buffers for months.
So, hydrated lime gets it where you want it, quickly.
Fine oyster shell flour helps keep it there, long term.
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hyphae
born to grow


Registered: 12/13/02
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: agar]
#5323078 - 02/21/06 06:18 AM (17 years, 11 months ago) |
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Remember it must contain less than 3% Mg
-------------------- Getting the most out of your casings!, A pinning strategy. Oyster Shell "Flour" $2 for 1lb. a hell of a deal Not what is overlay but rather what overlay is Gas Exchange vs. FAE "We all have priorities. I used a closet once setup a nice little lab trouble was all the shit that was in there ended up in the bedroom that pissed off the GF then I ended up dumping her as she was getting in the way of my sterile culture technique! Ya I got priorities too!!!"
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shymanta
Mad Scientist


Registered: 01/27/05
Posts: 907
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: hyphae]
#5327789 - 02/22/06 12:11 PM (17 years, 11 months ago) |
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I made my casing. I used this ratio: 38% verm 38% peat 16% oyster shell powder 8% hydrated lime.
I'll rig up a pipe and piston device to crush the remaining shells.
Myco-Supply is a sponsor, right. I'll give them a PM and see what they think.
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scatmanrav
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: shymanta]
#5327857 - 02/22/06 12:25 PM (17 years, 11 months ago) |
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Sounds like WAYYY to much hydrated lime. You use about 3 tablespoons to a 5 gallon bucket..thats not even 1%...
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Oatman2000
-=Outa Space=-



Registered: 05/10/05
Posts: 2,877
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: shymanta]
#5327871 - 02/22/06 12:29 PM (17 years, 11 months ago) |
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i have the same prob... 50 lbs for $5
but it's flakes...
i have a mortar and pestol... think this would work... time consuming yes, but effective? we'll find out.
pet store has crushed oystershells in small chips.
--------------------
Spawning to COIR
My Chocolate Recipe
WBS QUART SPAWN JAR PREPERATION ----------------------------
4-PO-DMT; 4-phosphoryloxy-N,N-dimethltryptamine
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shymanta
Mad Scientist


Registered: 01/27/05
Posts: 907
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: scatmanrav]
#5327985 - 02/22/06 12:58 PM (17 years, 11 months ago) |
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I think you're right. I confused something. I found a tek (which of course I can't find now) that used 15% calcium carbonate and 8% lime. I thought it was the 50-50 plus. But its ratio has 3% lime.
I could just add 2 1/2 time the other ingredients to lower the lime.
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shymanta
Mad Scientist


Registered: 01/27/05
Posts: 907
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: agar]
#5327994 - 02/22/06 01:00 PM (17 years, 11 months ago) |
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Agar, what do you think about my hydrated lime levels? 8% too much?
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Lana
Head Banana


Registered: 10/27/99
Posts: 3,109
Loc: www.MycoSupply.com
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: hyphae]
#5328003 - 02/22/06 01:02 PM (17 years, 11 months ago) |
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Quote:
hyphae said: And don't let them tell you it helps with a casings structure as thats simply BS.
You've never used oyster shell in a casing layer? Its not really that uncommon of a practice so no... its not BS.
Lana
-------------------- Myco Supply - Distributors of Mycological Products http://www.MycoSupply.com The Premiere Source for Mushroom Growing Supplies. Visit us online or call us toll free
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hyphae
born to grow


Registered: 12/13/02
Posts: 6,228
Loc: the rain forests
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: Lana]
#5328886 - 02/22/06 06:12 PM (17 years, 11 months ago) |
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Quote:
Lana said:
Quote:
hyphae said: And don't let them tell you it helps with a casings structure as thats simply BS.
You've never used oyster shell in a casing layer? Its not really that uncommon of a practice so no... its not BS.
Lana
Thats all I use for long term buffer. oyster shell flour actually does help with a casings structure but thats not what I was referring to, I was saying if they say the courseness helps structure thats BS although it would thats no reason to use it as your other ammendments are what really makes up your casings structure but you already knew that. I'm not here to BS anyone just teach.
-------------------- Getting the most out of your casings!, A pinning strategy. Oyster Shell "Flour" $2 for 1lb. a hell of a deal Not what is overlay but rather what overlay is Gas Exchange vs. FAE "We all have priorities. I used a closet once setup a nice little lab trouble was all the shit that was in there ended up in the bedroom that pissed off the GF then I ended up dumping her as she was getting in the way of my sterile culture technique! Ya I got priorities too!!!"
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agar
old hand


Registered: 11/21/04
Posts: 9,056
Loc: Somewhere Else
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: shymanta]
#5328962 - 02/22/06 06:37 PM (17 years, 11 months ago) |
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Quote:
shymanta said: Agar, what do you think about my hydrated lime levels? 8% too much?
That would turn myc to crispy tid bits .
WAY WAY WAY to much. 
If you don't have Ph strips, or a Ph tester.
I would not fool with hydrated lime AT ALL.
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hyphae
born to grow


Registered: 12/13/02
Posts: 6,228
Loc: the rain forests
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: agar]
#5329014 - 02/22/06 06:59 PM (17 years, 11 months ago) |
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I use 1tsp. short term (hydrated) per qt. of casing mix and 1-2tbs. of long term buffer. It works for me.
-------------------- Getting the most out of your casings!, A pinning strategy. Oyster Shell "Flour" $2 for 1lb. a hell of a deal Not what is overlay but rather what overlay is Gas Exchange vs. FAE "We all have priorities. I used a closet once setup a nice little lab trouble was all the shit that was in there ended up in the bedroom that pissed off the GF then I ended up dumping her as she was getting in the way of my sterile culture technique! Ya I got priorities too!!!"
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shymanta
Mad Scientist


Registered: 01/27/05
Posts: 907
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: agar]
#5329346 - 02/22/06 08:28 PM (17 years, 11 months ago) |
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I have PH strips. They should read ph7, right? The 50/50+ casing recipe is 3% lime, I think. I will add 2 1/2 times the verm, peat, & calcium. That should bring my mix down to 3% lime. I'll test it with a strip.
Thanks, Agar.
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shymanta
Mad Scientist


Registered: 01/27/05
Posts: 907
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Re: Crushed Oyster Shell for 50-50 plus?? [Re: shymanta]
#5329801 - 02/22/06 10:13 PM (17 years, 11 months ago) |
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I just tested the mix. It tested pH 6.25. I added more peat and verm about 2 1/2 times by volume. Tested again, it read pH7. However, this doesn't make since. Lime is like pH 12.4. My mix read acidic not basic. 
Anyway, it now adhears to the 50/50+ recipe.
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