Help cleaning Tent after PM

Cleaning my tent again. Black dots on floor. Only like 6 and tiny. Won’t come off for nutin!!! Is this mold ?? I’ve seen photos of PM with black dots in it

No, it's probably not mold or pm, its most likely that the reflective laminate has separated from the black oxford cloth that the outer tent material is made of. Get some plastic planter saucers so you keep your tent flooring free of nutrients, or if you are using cloth grow pots, the plants roots will pull the reflective laminate anytime you lift or move one of those cloth grow pots!

I bleached everything. Now going to hand light and exhaust fan and put space heater in there for 24 hrs once it reaches 100 plus degrees