I am on day 5 of my first grow. I finally got my par meter in so I could fine tune my lights. Currently my lights are about 20in away and I got my ppfd dialed in at 208 now. Im not sure if this is stem is normal or starting to stretch. Im waiting to see how she reacts to the new dialed in light setting. Im just curious would yall suggest to backfill a few inches up the stem or she how she adjusts to the settings before changing anything?