Update on the previous post: yes, putting a small piece of wet (white) paper towel in the petri dish does increase humidity and growth rate. In not even 24 hours, one of the four plates I had prepared made a nice connection between the electrodes. The other three slime mold blobs on other plates are either wandering around (bottom center photo) or getting nicely settled on their blobs (bottom left and right photos). That’s a nice speed change from the five days I had to wait for last week!

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