Aptasia? Algae? Help please

[Drumbum]

Thes are very small, brown, with that white spot. Noticed a couple on the glass yesterday and cleaned them off. Few more back today.
29 biocube rimless. 1 1/2 month old tank, 2 small cards, cuc, 7 small zoo frags, AI prime hd, plenty of rock, sand, flow.
Just got past my cycle brown algae bloom. Only new things are the frags and an rp-m.
I hope this isn't aptasia!!!!

 

[35ppt]

Redacted

 

[Drumbum]

Not aptasia. Looks like some sort of algae to me. Sort of a Bryopsis look to it. Scrape it off and put it in a container with a little bit of water and a white background for best ID photos.

Thankfully its not aptasia!

Its hard to get but I'll go at it. It sticks to the glass pretty good and its just above the sandbed, and is maybe a cm in size. The one from the pic is gone, maybe a red leg got it. There are a few more.
Thanks for the help!!