Indicas will show preflower generally week 8-9 around 3node from top. Look carefully, you probably wont see hairs, but can be distinguised. sorry I don't have a pictures for description. Noticed you are using reflectix on your walls. They reflect heat more than light. I use it on my ceilings only. Suggest covering walls with something else even if it is just the white walls behind it, it may be a quick fix just to tear it down and save a couple of degrees maybe. Good for ceiling though, keeps exhausted light heat in attic.