First time growing in filter patch bags. How do my bags look? (Grey Oyster)

Discussion in 'EDIBLE & MEDICINAL MUSHROOMS' started by squidgygoanna, Aug 10, 2017.

  1. squidgygoanna

    squidgygoanna Member

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    Hey guys.

    This is my first time growing mushrooms in filter patch bags. I'm using pelletized straw I get from a local mill as the substrate, bought to field capacity and then pastuerized in bags in a 44 gallon drum.

    I've been playing around with the moisture content and I think I've got it about right. This is about 4 days of growth. The mycelium looked a little bit wispy in spots but I think it's coming along OK now.

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  2. Odin

    Odin Well-Known Member

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    Well, it seems to be working, but the mycelium is definitely fighting some bacteria. You are supposed to pasteurize the straw before you put it in the bag. I'm not sure you could really do that with pelletized straw, which I've never heard of. What you did was essentially LIPA tek, which is a sterilization process meant for sawdust bags. You may have accidentally killed off the good bacteria that straw has. Depending on your temps and times while in the drum, there could also still be some bad bacteria in there. Good thing about oysters is, it will probably still work even if that is the case. I'll be waiting to see your results, good luck! Did you use any sort of supplements, gypsum... lime?
     
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  3. squidgygoanna

    squidgygoanna Member

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    Thanks Odin! I'm familiar with straw pasteurization, I just thought I'd give the pelletized version a try as I can get it very cheap and its a lot less messy than working with straw. The mill that I bought it from have several other mushroom growers around the country that utilize the pellets for Oysters. I essentially followed the same process that's used for sawdust bags, however I monitored the core temperature of the bags with a probe thermometer to ensure I didn't exceed pasteurization temps. I also inoculated the bags in front of a flowhood to try and keep things as sterile as possible. Didn't add any supplements this time around, would you recommend supplementing next time?
     
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  4. Odin

    Odin Well-Known Member

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    Well, I would say add lime to the soak water, but you can't add anything else without sterilizing.
     
  5. squidgygoanna

    squidgygoanna Member

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    No worries. Will be keeping an eye on these and will report back if/when they make it to the fruiting chamber!
     
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  6. Odin

    Odin Well-Known Member

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    It's oyster, I'm certain they will!
     
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  7. Ratatoskr

    Ratatoskr Plenipotentiary Supporter

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    mix in your spawn more thoroughly.
     
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  8. squidgygoanna

    squidgygoanna Member

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    If the bags reach 100% colonization but are showing possible signs of contamination, is it safe to move them to the fruiting chamber? Based on pictures I've seen it can be hard to tell a contam from mycelium, unless it's trich or something obvious
     
  9. Odin

    Odin Well-Known Member

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    What is your fruiting set up? I personally don't recommend doing oysters indoors unless you can assure a pre-sporeulation harvest. Especially if you have family in the house. But if you are fruiting outside, then it doesn't matter.
     
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  10. Odin

    Odin Well-Known Member

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    Click here to learn why.
     
  11. Titus

    Titus Creative PITA

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    Cool thread.
     
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  12. squidgygoanna

    squidgygoanna Member

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    I have an insulated shipping container I've converted into a lab/fruiting chamber, it's separate from the house so no worries there. I documented the construction process so I'm hoping to make a thread with some pics when I get a chance.

    I'm thinking of ways I might be able to pastuerize the straw pellets the way straw is normally done. Perhaps if I hydrated the pellets and made some sort of mesh container I could place them in and submerge in hot water, then allowing it to drain to field capacity

    Maybe submerging in a pillow case might work?
     
    Last edited: Aug 11, 2017
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  13. Odin

    Odin Well-Known Member

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    That could work, but I think you need to get something in there to break up what I imagine is straw dust. One of straws biggest plus sides besides not needing to be sterilized is that there is so much surface area. Can you put some pictures of the pellets up?
     
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  14. squidgygoanna

    squidgygoanna Member

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    That makes sense, do you have anything in mind that could be used? Here's a picture of the pellets

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    [​IMG]
     
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  15. cyanazure

    cyanazure Member

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    can you post a picture of what these straw pellets look like after they are hydrated? Thanks.
     
  16. squidgygoanna

    squidgygoanna Member

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    Just hydrated some to snap a pic. I'm interested to hear how you guys would prep these pellets, what method you would use etc

    [​IMG]
     
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  17. Odin

    Odin Well-Known Member

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    I think if you load it lightly, and don't pack it, it should do well. I can't think of anything to throw in there that doesn't have to be sterilized.
     
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  18. squidgygoanna

    squidgygoanna Member

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    Damn, I compacted these ones hard lol. And as for the pasteurization method, would you recommend continuing to pasteurize in bags like I've been doing? or try and find a way to pasteurize that is closer to the traditional straw method?
     
  19. Odin

    Odin Well-Known Member

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    Are you pouring the water into the bags at temp, then closing them up and letting them pasteurize that way? Or are you hydrating, and putting the bags into a drum with hot water in it?
     
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  20. squidgygoanna

    squidgygoanna Member

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    I hydrated the pellets, loaded them into bags and steam pasteurized in my 44gal drum (it has about 5 inches of water in the bottom with a 2000w heating element)
    and monitored core temps with a probe thermometer. I didn't think I should fully submerge the bags due to water leaking through the filter patch and messing with the moisture content. What method would you suggest?