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InvisibleGrumio

Registered: 10/18/19
Posts: 126
Coir only or coir and vermiculite? First time making bulk substrate.
    #26396743 - 12/23/19 03:55 AM (4 years, 1 month ago)

I've got a couple of rye grain bags that are ready to spawn to bulk.

I am going to make my own bulk substrate this time and do a couple of shoeboxes.

I have an insulated cooler and some bricks of coir.

I was going to follow bods easy tek for preparation of the coir.

As i am only making two small shoeboxes I was going to use 200g of coir and 100ml of water as per bods tek.

However I can't see any mention of vermiculite in there. Do i need this?

If so, how much verm and when do i add it or shall i just go without?

thanks,


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OfflineJohnRainy
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Registered: 07/09/19
Posts: 1,244
Last seen: 3 years, 11 months
Re: Coir only or coir and vermiculite? First time making bulk substrate. [Re: Grumio]
    #26396748 - 12/23/19 04:06 AM (4 years, 1 month ago)

You don't need it but some people think the substrate is better with it.  About a cup per 100g.

Bod's recipe makes my coir too wet.  With the vermiculite it's about the right amount of water, without, about 20% less water


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OfflineBLINKfan420
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Registered: 07/06/12
Posts: 1,078
Last seen: 5 months, 16 hours
Re: Coir only or coir and vermiculite? First time making bulk substrate. [Re: JohnRainy]
    #26396976 - 12/23/19 08:31 AM (4 years, 1 month ago)

I've done both.

Got great results with both.

Now I just throw my extra verm in just to get rid of it.  I'm not sure I'll be buying more when I run out unless I start running into problems with straight coir.

I'd say you don't need it.

BLiNK


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Offlinefrumpcicle
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Registered: 09/03/18
Posts: 4
Last seen: 2 months, 8 days
Re: Coir only or coir and vermiculite? First time making bulk substrate. [Re: Grumio]
    #26397241 - 12/23/19 11:21 AM (4 years, 1 month ago)

I believe the importance varies depending on your climate and where you are storing your tubs.

I'm in the midwest going through a very dry winter.  In addition, my tubs have to be stored in a furnace/laundry room.

I did straight coir for my tubs, but because of my conditions the substrate dries out very fast even with misting twice a day.

My next run I will either do a mix of verm and coir, or I will add a casing layer to help.


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OfflineAlwaysAtHeight
Grain Dancer


Registered: 09/12/19
Posts: 65
Last seen: 9 months, 20 days
Re: Coir only or coir and vermiculite? First time making bulk substrate. [Re: frumpcicle]
    #26397303 - 12/23/19 12:02 PM (4 years, 1 month ago)

I've had better results with coir and verm. I brick of coir(~640g) to 2 qts verm(~250g) with about 4qts water. I boil it for fun but you don't need to and you certainly don't need all that insulated cooler stuff. I use a 5gal bucket with a lid


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The trick is in what one emphasizes. We either make ourselves miserable, or we make ourselves happy. The amount of work is the same.

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Invisiblegizmo1
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Registered: 06/15/11
Posts: 3,831
Loc: FREEDOM Flag
Re: Coir only or coir and vermiculite? First time making bulk substrate. [Re: AlwaysAtHeight]
    #26397401 - 12/23/19 12:49 PM (4 years, 1 month ago)

I like to use verm for drying the substrate when it's too wet. If it comes out perfect(it never does) I dont add any.
If it comes out too wet I add it a handful at a time, mixing between handfuls, until it is at field capacity.
If it comes out too dry I just leave it as it is and give it a mist with a spray bottle after spawning.
Supposedly verm helps retain moisture better than just coir I dont know if this is true I've never tested it side by side or anything.


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InvisibleGrumio

Registered: 10/18/19
Posts: 126
Re: Coir only or coir and vermiculite? First time making bulk substrate. [Re: gizmo1]
    #26398505 - 12/24/19 01:57 AM (4 years, 1 month ago)

Thanks for all the replies guys, i'm going to knock up a batch of coir on it's own and if it's too wet add a little verm to bring back to field capacity.

thank you and have a good Christmas all!


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