Is this Acan/Micromussa behavior normal?

[RoryReefs]

I got my first acan/micro lord a few weeks ago. She (yep, my SO has designated this acan a "she") plumped up really well in the first few days, though over the last week or so I've noticed that she's been opening up more and more, with feeder tentacles and the inner "face" (guts??, technical term) spilling over the pillow-y "petal" ring around the outside. Not sure if this behavior is normal, or indicates something is amiss (low lighting, flow, unhappy with nearby duncan/other acan, hungry?). I thought it was just happy, but part of the "face" looks a little transparent and it's been poofy, not looking like any other acans I've seen. So, I figured getting another opinion can't hurt!

Thanks for your time and help

Can't hurt to give my params too I guess, if it is something to worry about:
Temp : 25.5C / 79 F
PH: 8.2
NH4: 0
Nitrite: 0
Nitrate: 7.5 ppm
Phosphate: don't have test kit yet
Salinity: 1.0255 SG
Alk: 8.7 dKH
Ca: 430
Mg: 1430
PAR: running it pretty low settings on my LED right now, most of the tank is 30-80 (It will be acan/lps dominate). This acan's location is in the 40-60 range if my notes are right. (It's my understanding they can do quite fine and may color nicely in lower light, so that's what I'm shooting for).

 

[RoryReefs]

The white spec is one of the tentacles that's curled in and turned white. This one has a few tentacles which are "peeled" inward a little more than the others and have white or green lines leading inward. I figured this is normal, but if not let me know! I really want these creatures to be as happy and comfy as possible!

 

[grisha]

It’s doing good. The only time you have to worry when Acan is retracted in to skeleton very tight(nibbling), next stage tissue breaking off skeleton/receding(bacterial), worst when polyps dis-attach and float away(most of the time crashing tanks)
Very often acans are not happy if peppermint shrimp is eating it at night. Or constant nibbling of fish.
Acan can be attacked by other related lps (chalice, echinata, etc)

 

[grisha]

Another advise, try to glue it to a rock or larger disk. Less tangling around, happier Acan

 

[RoryReefs]

Thank you for the feedback! No nibbing to be seen! Nothing to nibble at them in the tank, just some snails that occasionally come by to pick at the algae on the plug. Will be moving the acan to rock soon!

It’s doing good. The only time you have to worry when Acan is retracted in to skeleton very tight(nibbling), next stage tissue breaking off skeleton/receding(bacterial), worst when polyps dis-attach and float away(most of the time crashing tanks)
Very often acans are not happy if peppermint shrimp is eating it at night. Or constant nibbling of fish.
Acan can be attacked by other related lps (chalice, echinata, etc)