Why my anemoe closes up?

[TGalinsky]

Came home today to find my anemone closed and an hour and 1/2 later opened a little but tentacles mostly deflated. Up to this point he moved around the tank until he found a spot he liked and stayed there. He is hosted by a panda and an Osceola clownfish. Not sure whats going on.
Tank: 75 Gal (established 2 years)
Ph: 8.2
Amonia: 0 ppm
Nitrite: 0 ppm
Nitrate: 40 ppm
Salinity: 1.024
Temp: 83 (just lowered heater will check again).
I posted a picturesattachFull505576 attachFull505576

 

[TGalinsky]

He has only been in the tank for 3 weeks.

 

[davocean]

I think you have a magnifica there, and one that needs cipro treatment, read up on cipro protocol, and don't waste time, it goes south very fast

 

[TGalinsky]

I have been actively seeking how to get my hands on cipro for my anemone. Got a tank set up for "hospital" care. Now look at him! Not sure if I should mess with him. Thinking he just had an attitude with the clowns lol. Yikes hes going to make me have to take meds!