Movement at night

[i cant think]

So, I love to look at my tank after lights out and one of the things it’s missing is movement at night. I know the first coral that would be thought of are NPS but I don’t have many caves and my PAR in the day is rather high - before I turned it down to just under 3/4 it was pushing I believe 600+ PAR out at the height of the day. So my main fear would be algae growing over the NPS Coral.
The tank is a 3’x16”x1’ custom made tank, and the ideas for fish are all small fish that stay around 2 inches however, instead of single specimens keep them in trios/pairs with one or two that get larger (4 inches max).
So, what would you choose?
I’m open to all suggestions of Fish, Coral and Inverts.

 

[kingoftheHiLLpeople]

My Banggai cardinals are OUT 24/7 lol

 

[Miami Reef]

There are many corals that provide movement at night, especially LPS corals because of their feeder tentacles.

Acans and Lobophyllia corals are prime examples in my tank.

Most inverts (shrimps, crabs, snails) are nocturnal.

 

[kingoftheHiLLpeople]

@i cant think - your new brittle star will be out and about at night!

 

[i cant think]

@i cant think - your new brittle star will be out and about at night!

Yeah, I’ve been looking into them quite a bit lately (I need something to get the detritus and left overs out of the crevices I may be unable to get to).
I think I’m pretty set on getting one, just to see if my LFS does actually have one in or not though.