Hey all sorry I slept in I was up all night with frigging @Moto lmao. My observation this morning leads me to moss. No smell, when I pull it the soil comes with. I thought algae cause the green patches line up with the holes but now I think moss. I'm not running it cause I have my own soil mix I was just going to use it as filler on transplants and fill it with microbes and not worry. I generally get the white fuzz on my soil letting me know my herd is well.