From the left to the right (in the attached photo): two jars of Pleurotus ostreatus spores (now mycelium) growing in grain, two jars of P. ostreatus liquid culture cloned from agar, and two jars of Pleurotus pulmonarius liquid culture cloned from agar....
Anyone know more about the cause? It’s happened to me a couple times with cultures that proved clean. My best guess is temperature fluctuation, it’s pretty hot here