|
Some of these posts are very old and might contain outdated information. You may wish to search for newer posts instead.
|
coffeehead
Perpetual Learner

Registered: 01/15/13
Posts: 142
Last seen: 5 years, 1 month
|
LC Math - WTF? - Am I Crazy?
#18755840 - 08/25/13 04:22 PM (10 years, 5 months ago) |
|
|
Here's the deal. I've read here that the preferred sugar concentration of a LC is around 2.0% - 3.0%.
Let's do the math.
One gram of 100% sugar in 100 ml (100 grams) of water = a 1% solution (0.01).
Malt extract is 75% carbohydrate (49% sugar) and 5% protein. Everything else is in the microgram range, so basically malt extract is 80% nutrients and 20% water. For my calculations I'll call all the carbohydrates sugar and even add in the protein to make the math easier.
So one gram of malt extract in 100 ml (100 grams) of water = a 0.8% solution (0.008).
Therefore, three grams of malt extract in 100 grams of water yields a 2.4% solution (0.024).
Scaling that up means making a liter of 2.4% ELME LC solution requires 30 grams of ELME for 1,000 grams of water. Or to be more finicky:
Total solution weight = 1,030 grams Total nutrient weight = 24 grams
24/1,030 = 0.0233 or a 2.33% (0.0233 x 100) solution. Close enough.
Yet I see all sorts of malt LC recipes ranging from 0.667 grams of malt extract for 1 qt. (946 ml) water to 2 grams per liter.
Two grams per liter = 1.6 grams nutrients per 1,000 grams water, or:
1.6/1,002 = 0.0016 - yielding a 0.16% solution (0.0016 x 100).
Everything I've read says both the 0.667 gram malt extract to .946 liter water LC (0.06%) and the 2 gram malt extract to 1,000 ml LC (0.16%) work great.
WTF?
A 0.06% LC solution works? Is that correct?
The math looks good, but how can an LC with such a low nutrient concentration be "kick ass?"
The two formulas range from 1/39th to 1/15th of a 2.33% solution.
How/why do they work.
And I know LCs suck so plz don't tell me about that. I've got agar going, too.
I just can't figure out the disparities between the numbers.
|
budmanman
OTD Masterbater



Registered: 02/07/07
Posts: 17,975
Loc: PNW
|
Re: LC Math - WTF? - Am I Crazy? [Re: coffeehead]
#18755877 - 08/25/13 04:32 PM (10 years, 5 months ago) |
|
|
What I like to do is transfer from agar to LC. Clean lc basically guaranteed.
-------------------- Everything I have ever said is total bogus bs I am full of crud therefore everything I say should never be taken literal. And I am mentally unstable.
|
Juiceh
Dabbing All Day



Registered: 09/25/12
Posts: 3,208
|
Re: LC Math - WTF? - Am I Crazy? [Re: coffeehead]
#18755928 - 08/25/13 04:45 PM (10 years, 5 months ago) |
|
|
Quote:
coffeehead said: Yet I see all sorts of malt LC recipes ranging from [url=/forums/showflat.php/Number/15234219]0.667 grams of malt extract for 1 qt.
Thats .667g for a 400ml Pint jar and 1g for a 600ml qt jar.
I used the 1g/600ml recipe. Seems to work well. Haven't tried anything else.
|
coffeehead
Perpetual Learner

Registered: 01/15/13
Posts: 142
Last seen: 5 years, 1 month
|
Re: LC Math - WTF? - Am I Crazy? [Re: Juiceh]
#18755976 - 08/25/13 04:55 PM (10 years, 5 months ago) |
|
|
Quote:
Juiceh said:
Quote:
coffeehead said: Yet I see all sorts of malt LC recipes ranging from [url=/forums/showflat.php/Number/15234219]0.667 grams of malt extract for 1 qt.
Thats .667g for a 400ml Pint jar and 1g for a 600ml qt jar.
I used the 1g/600ml recipe. Seems to work well. Haven't tried anything else.
That still works out to a 0.13% solution, WAY short of the recommended 2.0% or so.
It's starting to look like one more of the "established facts" I've read here is bullshit.
Anybody else have a good ELME LC recipe?
I'd rather try something that works for people than do lab calcs for a recipe that doesn't work.
|
PussyFart
Retired Cultivation Extrodinaire



Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 17 days, 15 hours
|
Re: LC Math - WTF? - Am I Crazy? [Re: coffeehead]
#18756191 - 08/25/13 05:44 PM (10 years, 5 months ago) |
|
|
Quote:
coffeehead said: Anybody else have a good ELME LC recipe?
20g agar powder, 30g ELME, 1 liter of water.
Agar is better than LC hands down.
--------------------
THIS HOBBY IS NOT FOR THE IMPATIENT! PLEASE BE PATIENT, DON'T BE A PATIENT! A Tale of 10 Isolates, GT Cluster Clone Monotubs, RR's Let's Grow Mushrooms DVD, SGFC(Shotgun Fruiting Chamber), Monotub Tek, Damion5050's Coir Tek, TL's Tek List, Frank's Tek List, EvilMushroom666's Pasteurization Tek, How It Should & Shouldn't Look - NEW CULTIVATORS GUIDE *** *** AFGHAN KUSH GROW LOG *** ***
Edited by PussyFart (08/25/13 05:45 PM)
|
budmanman
OTD Masterbater



Registered: 02/07/07
Posts: 17,975
Loc: PNW
|
Re: LC Math - WTF? - Am I Crazy? [Re: PussyFart]
#18756594 - 08/25/13 07:14 PM (10 years, 5 months ago) |
|
|




Agar to karo lc. It comes out quite nice.
I pc for 45-55 minutes. It reduces contam lc's and I have never experienced crystallization.
-------------------- Everything I have ever said is total bogus bs I am full of crud therefore everything I say should never be taken literal. And I am mentally unstable.
Edited by budmanman (08/25/13 07:24 PM)
|
PussyFart
Retired Cultivation Extrodinaire



Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 17 days, 15 hours
|
Re: LC Math - WTF? - Am I Crazy? [Re: budmanman]
#18756687 - 08/25/13 07:31 PM (10 years, 5 months ago) |
|
|
Quote:
budmanman said: Agar to karo lc. It comes out quite nice.
I pc for 45-55 minutes. It reduces contam lc's and I have never experienced crystallization.
Agar does not reduce contams.
That is just silly nonsense.
--------------------
THIS HOBBY IS NOT FOR THE IMPATIENT! PLEASE BE PATIENT, DON'T BE A PATIENT! A Tale of 10 Isolates, GT Cluster Clone Monotubs, RR's Let's Grow Mushrooms DVD, SGFC(Shotgun Fruiting Chamber), Monotub Tek, Damion5050's Coir Tek, TL's Tek List, Frank's Tek List, EvilMushroom666's Pasteurization Tek, How It Should & Shouldn't Look - NEW CULTIVATORS GUIDE *** *** AFGHAN KUSH GROW LOG *** ***
|
budmanman
OTD Masterbater



Registered: 02/07/07
Posts: 17,975
Loc: PNW
|
Re: LC Math - WTF? - Am I Crazy? [Re: PussyFart]
#18756718 - 08/25/13 07:36 PM (10 years, 5 months ago) |
|
|
If your lc is contaminated u can isolate clean myc and then transfer to a LC or a new dish and then to a lc, if done in a SAB you are all set.
-------------------- Everything I have ever said is total bogus bs I am full of crud therefore everything I say should never be taken literal. And I am mentally unstable.
Edited by budmanman (08/25/13 07:36 PM)
|
PussyFart
Retired Cultivation Extrodinaire



Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 17 days, 15 hours
|
Re: LC Math - WTF? - Am I Crazy? [Re: budmanman]
#18756732 - 08/25/13 07:39 PM (10 years, 5 months ago) |
|
|
That is not reducing contams, that is getting contams just the same, and then transferring away from them.
But inside of an LC? In my mind it's just not possible, unless it was damn near the consistency of agar.
--------------------
THIS HOBBY IS NOT FOR THE IMPATIENT! PLEASE BE PATIENT, DON'T BE A PATIENT! A Tale of 10 Isolates, GT Cluster Clone Monotubs, RR's Let's Grow Mushrooms DVD, SGFC(Shotgun Fruiting Chamber), Monotub Tek, Damion5050's Coir Tek, TL's Tek List, Frank's Tek List, EvilMushroom666's Pasteurization Tek, How It Should & Shouldn't Look - NEW CULTIVATORS GUIDE *** *** AFGHAN KUSH GROW LOG *** ***
|
budmanman
OTD Masterbater



Registered: 02/07/07
Posts: 17,975
Loc: PNW
|
Re: LC Math - WTF? - Am I Crazy? [Re: PussyFart]
#18756748 - 08/25/13 07:42 PM (10 years, 5 months ago) |
|
|
I do not know what the consistency has to do with anything. If you do not introduce a contam during transfer you are good. I think I made a typo up there which is causing confusion, You can transfer a contamed lc to agar and to lc is what I meant to say.
I meant isolate clean myc with agar. and transfer to a lc.
Spore to agar to lc is a great way to make a lc. Less odds of a contam cause you can isolate a clean peace.
-------------------- Everything I have ever said is total bogus bs I am full of crud therefore everything I say should never be taken literal. And I am mentally unstable.
Edited by budmanman (08/25/13 07:55 PM)
|
FrankHorrigan
The Inquisition



Registered: 01/04/11
Posts: 10,573
|
Re: LC Math - WTF? - Am I Crazy? [Re: PussyFart]
#18757339 - 08/25/13 09:50 PM (10 years, 5 months ago) |
|
|
Quote:
Notahacker420 said:
Quote:
coffeehead said: Anybody else have a good ELME LC recipe?
20g agar powder, 30g ELME, 1 liter of water.
Agar is better than LC hands down.
Agreed, except...
I'd get rid of 10g of ELME in your recipe (bring it down to 20g) and you'll have some really nice growth.
Maybe throw a couple grams of brewers yeast in too 
OP, whatever you have read aside...
my favorite LC is 1 gram of ELME to 600mL of water.
It is aggressive as hell when it hits grains, and easy to break up.
|
PussyFart
Retired Cultivation Extrodinaire



Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 17 days, 15 hours
|
|
I tried that frank, and with my malt extract, I got no growth, or stalled growth.
What did grow was highly rhizomorphic.....

But when transferred to another 20g dish, it did not grow at all...it just stalled.
Switched back to 30g of malt and everything is nice.
That is why you see a "20" or "30" marked on some of my dishes.
Different brands of malt yield different results i guess..
--------------------
THIS HOBBY IS NOT FOR THE IMPATIENT! PLEASE BE PATIENT, DON'T BE A PATIENT! A Tale of 10 Isolates, GT Cluster Clone Monotubs, RR's Let's Grow Mushrooms DVD, SGFC(Shotgun Fruiting Chamber), Monotub Tek, Damion5050's Coir Tek, TL's Tek List, Frank's Tek List, EvilMushroom666's Pasteurization Tek, How It Should & Shouldn't Look - NEW CULTIVATORS GUIDE *** *** AFGHAN KUSH GROW LOG *** ***
|
FrankHorrigan
The Inquisition



Registered: 01/04/11
Posts: 10,573
|
Re: LC Math - WTF? - Am I Crazy? [Re: PussyFart]
#18757370 - 08/25/13 09:57 PM (10 years, 5 months ago) |
|
|
Weird, I guess so. Never thought of that.
If it doesn't work for ya, it doesn't work 
Tried yeast yet?
|
PussyFart
Retired Cultivation Extrodinaire



Registered: 04/08/12
Posts: 22,502
Loc: Orbiting Earth
Last seen: 17 days, 15 hours
|
|
No....but maybe one day...
--------------------
THIS HOBBY IS NOT FOR THE IMPATIENT! PLEASE BE PATIENT, DON'T BE A PATIENT! A Tale of 10 Isolates, GT Cluster Clone Monotubs, RR's Let's Grow Mushrooms DVD, SGFC(Shotgun Fruiting Chamber), Monotub Tek, Damion5050's Coir Tek, TL's Tek List, Frank's Tek List, EvilMushroom666's Pasteurization Tek, How It Should & Shouldn't Look - NEW CULTIVATORS GUIDE *** *** AFGHAN KUSH GROW LOG *** ***
|
FrankHorrigan
The Inquisition



Registered: 01/04/11
Posts: 10,573
|
Re: LC Math - WTF? - Am I Crazy? [Re: PussyFart]
#18757398 - 08/25/13 10:02 PM (10 years, 5 months ago) |
|
|
It is pretty fantastic 
Get a cheap $5 container at the grocery store. You can thank me later
|
Mush4Brains
LOOL HACKED!!!

Registered: 07/31/13
Posts: 4,419
Last seen: 9 years, 2 months
|
Re: LC Math - WTF? - Am I Crazy? [Re: budmanman]
#18757780 - 08/25/13 11:30 PM (10 years, 5 months ago) |
|
|
Quote:
budmanman said: What I like to do is transfer from agar to LC. Clean lc basically guaranteed.
What's your point? This answers nothing.
|
budmanman
OTD Masterbater



Registered: 02/07/07
Posts: 17,975
Loc: PNW
|
Re: LC Math - WTF? - Am I Crazy? [Re: Mush4Brains]
#18760328 - 08/26/13 04:23 PM (10 years, 5 months ago) |
|
|
He said LC's suck but with agar they are amazing.
-------------------- Everything I have ever said is total bogus bs I am full of crud therefore everything I say should never be taken literal. And I am mentally unstable.
|
|