Long tentacle anemone

[Bbfeckawitts]

Hi,
I purchased this long tentacle anemone last Tuesday so have had it for 5 days. He immediately attached but has moved back closer/almost under the rockwork. Im running a smatfarm reef light 20/80/80 white blue blue. Ph 8.1 phosphate .08 nitrate 4. Temp 78. He ate a piece of cut up shrimp today. My question is does he look ok? Why is he going under the rock, is he getting too much light? Should I clip that piece of macroalgae out of there? I haven't yet because I was worried about disturbing him.
Also have a duncan and cespitularia in there. Tank is 40gal breeder.

 

[Sphyrna_gal]

Generally, anemones settle in where they are happiest, they often will move if the lighting or flow isn't to their liking/stressed. Would just keep an eye on it and hopefully it's happy here.