What Are These Things

[Myka]

Okay, the green stick things called Neomeris annulata are in ALL of your photos. I thought you were also looking for an ID on the tall stringy thing with a disk on the end...which I called a mushroom like thing which sows up only in your first two photos. I still couldn't find an ID on it. The brown disk thing that only shows up in your last two photos is Padina.

If I had a photo program I would just circle them for you...here, links instead:

Padina:

Neomeris annulata:

Do you have any inhabitants in your aquarium right now? If so, what?

EDIT: I saw your tank log...looks like just some clean up crew and a couple chromis? If so, there is no harm in doing a dark period (low lighting probably won't make enough difference). Just don't turn the lights on for a week or so and see if there's a difference. If not, keep them off for longer.