Might just be the picture lighting, the one on the right looks good, nice white mycelium. You can also see the growth rings those are another good sign of healthy spawn. See the way the mycelium forks out in a nice circle
However if that is grey colour growing in the left jar it looks contaminated. Might be one for disposal, if your unsure you can separate it from the rest until it becomes clearer what is going on in there
Edited by FLASHINGROOSTER, 23 July 2021 - 04:23 PM.