AAAUGHGH REDDIT IM SO EXCITED!! TL;DR my isopods dug a tunnel!

(flash on bc my room is very dark and you wouldn't even be able to see the dirt at all without it) It's easier to see that it's obviously a tunnel in person. But I am so excited! I had read that they tunnel and that other people see tunnels against the glass, but I sorta doubted it. This is their 19th day in this tank, and I didn't notice it this morning but now there's for sure a tunnel here! It's also exciting because I had a hunch that they've been hanging out under the big acorn cap, and it looks like one of the tunnel openings is partially under it. The other opening is in the spot where I most frequently see them, at the very front and almost center of the tank. This is so exciting for me!!!