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Offlinedzza
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Registered: 12/31/10
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2.25 qt spawn- cake or bulk?
    #14590459 - 06/10/11 12:46 PM (12 years, 8 months ago)

I'd like to use my colonized BRF half pints as spawn (9 jars, 2.25 quarts total), but after searching for information on moving to bulk I think I may be confronted with the problem that I have too little spawn for a 16.5 gallon monotub.

The bulk substrate I would prepare would be coir/verm/coffee, following large_dose's method:
http://www.shroomery.org/forums/showflat.php/Number/9289857/fpart/1/vc/1

Is this too little spawn?  Do I run a risk for contams if I proceed this way?  Would you recommend I fruit these as cakes in a shotgun fc, and wait on bulk until I can do grains with a PC?

Thanks

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InvisibleLayinUp
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Re: 2.25 qt spawn- cake or bulk? [Re: dzza]
    #14590476 - 06/10/11 12:49 PM (12 years, 8 months ago)

how much volume of bulk substrate will you be using?


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Offlinegym
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Re: 2.25 qt spawn- cake or bulk? [Re: dzza]
    #14590533 - 06/10/11 01:05 PM (12 years, 8 months ago)

I know you want to do the monotub but is it that important really? Would a 10qt casing be too small to be worth while?

For me using a large amount substrate for a small amount of spawn is risky.  There have been times I have gotten away with it and there have been failures. Even when I don't get contaminates it seems to just yield shitty and flush unevenly.  See what I mean in the pic below?

I used 8 parts sub to 1 part spawn for that casing and it sucked, That may or may not be the reason it did so shitty but I think the low amount of spawn was at least a major player because I made more casings the same day with my usual 4:1 and they all did great - same syringe, same everything.




I get my best results when I use 4 parts substrate to 1 part spawn.  I realize that other growers use more sub per spawn but I am just sharing my experience.

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Offlinek00laid
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Re: 2.25 qt spawn- cake or bulk? [Re: gym]
    #14590583 - 06/10/11 01:18 PM (12 years, 8 months ago)

what substrate and what spawn and what casing layer?


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Offlinedzza
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Re: 2.25 qt spawn- cake or bulk? [Re: k00laid]
    #14590610 - 06/10/11 01:25 PM (12 years, 8 months ago)

Quote:

LayinUp said:
how much volume of bulk substrate will you be using?



I wanted to try a 4:1 ratio, so 9 quarts of substrate.

Quote:

k00laid said:
what substrate and what spawn and what casing layer?



BRF spawned to coir with some coffee grounds and verm added in.
I wasn't planning to use a casing layer.

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Offlinedzza
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Re: 2.25 qt spawn- cake or bulk? [Re: dzza]
    #14590642 - 06/10/11 01:33 PM (12 years, 8 months ago)

I guess what I'm worried about is that if I have something like a 4:1 ratio between sub and spawn, and the total volume of everything in the tub is something just under 3 gallons in a tub that is 13x20, then that'll give me a substrate depth of around 2.5 inches. 

From what I've seen in searching the forums, the ideal substrate depth is more around 4 inches.  I haven't put any holes in the tub yet, but I'd like to put them around 4 inches so that I can use the tub when I spawn from grain. 

It comes down to this- is 2.5 inches of substrate depth going to work out?  Will it be problematic to have this depth and still put the holes in at 4 inches height on the monotub?

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Offlinegym
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Re: 2.25 qt spawn- cake or bulk? [Re: dzza]
    #14590665 - 06/10/11 01:38 PM (12 years, 8 months ago)

Quote:

dzza said:
I wanted to try a 4:1 ratio, so 9 quarts of substrate.





You should be golden then, I was thinking you were gonna do the whole 16qt tub with 2.25qts, lol. Good luck!

2.5 inches of sub should work great. It seems like I get better flushes from a thinner sub, albeit fewer flushes, than I do with thick subs.

Edited by gym (06/10/11 01:46 PM)

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InvisibleLayinUp
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Re: 2.25 qt spawn- cake or bulk? [Re: gym]
    #14590704 - 06/10/11 01:48 PM (12 years, 8 months ago)

4:1 ratio, you should be fine

this mono we have going was more like 1:5 ratio, and colonized in just over a week


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