Hello all! I hope everyone is having a good week amongst all the insanity.
As I mentioned higher in this thread, I was going to share my next harvest. This is from the same batch of grain from my first post, the same sterilization cook, the same LC, inoculated on the same day 5/27/2020. That makes this grain 127 days old.
As you can see below, there is a difference in color with the older grain when compared to my first post of the 100 day old stuff, but only one bag seems to show a lot of oxidation. The reason why I am posting so many images is that three of these bags are contaminated, but look normal when viewed from outside the bag. I knew three were contaminated by the smell. Before opening, I gently squeeze each bag giving the filter patch a sniff. Any smell besides grain or fresh mushroom smell and I normally throw the bag away without opening it. For the benefit of this thread, I thought I would open the bags and document the visual contamination. I do not recommend opening a bag indoors that smell unusual since it could contaminate your environment. Actually, just don't open it period! In case anyone is curious, the smell that tipped me off on these bags was the faint odor of ammonia, although any odor besides mushrooms or grain should be a warning. I have learned not to dwell too much on what the cause could be, there are too many possibilities. I just make a note to try harder with my sterilization and other preps.
Here are images of the unopened bags;
This first contamination is a type of gray mold. Notice the "hairy" appearance with dark brownish gray matting.
These next two are the remaining contaminated bags. Very gnarly looking, multiple colors in a "hairy" layer with bright yellow particles suspended above the surface of the mycelium.
Finally, the one good bag. It smells nice and in cross section has the appearance of what I have learned to expect. The outer edge of the colony is slightly damp with several shades of blues and blacks drying out towards the center of the cake. The top of the cake has a blue ring that (for this bag) seems to mark the margin of the darker layer shown in the cross section.
For the most part, this is how every healthy bag that I have grown has looked. The older the bag, the thicker the darker colored layer. Keep in mind, this is just my experience, other people might have a different one.
And finally, the (healthy) busted up colony before dehydration (it is in the dehydrator as I write this).
I also want to add, that even if one of these contam cakes had looked normal, I would never know because I would have never opened a bag that smells like piss or wet socks!
Edited by Jinroh, 30 September 2020 - 08:50 PM.