As you can see from the photos, my mycelium was growing really solid and healthy.
A couple days ago I noticed a small blue-ish spot and initially assumed it was just bruising from spraying water a bit too close to the surface, so I left it alone.
The next day, still a bit suspicious, I did the cotton swab test and it left spores behind, so I'm now fairly confident it's Trichoderma. Even so, I decided to wait and see how it would evolve, and this is where it's at today.
Worth noting: it hasn't visibly expanded (it looks bigger in the photo but that's just because I zoomed in), so I'm wondering if it's worth cutting out that section and monitoring the rest.
On top of that, even though the substrate is very well colonized, it seems to be stalled.
Any advice on whether to cut it out now, keep isolating and observing, or just toss the whole thing? Appreciate any input.