Its lst in a circle around the pot
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Looking good and now you show the carpet and I'm squirming.
Get some more plastic and cover it all up. And get some trays so the pots are not sitting right on the plastic.
I'm not judging but I'm just a stickler for clean weed. I have all the intakes on my tent filtered and only open it for essential purposes.
If you grow in an environment with carpet and other stray fibers and particles of dust and such it will accumulate on the weed. The fibers are the worst and pet hair. It's something many indoor growers don't think about and then post pictures of buds that look like an Afghan Rug.
You definitely don't want that open carpet when your buds are 8 weeks into flower and sticky. Just moving things around or walking in the area will put fibers in the air that can get on the flowers. Polyester and nylon are not desirable terpenes.
You can get coated wire made specifically for training plants.