Weird Behaving Anemone.. Never seen this guy do this b4 ~Help

Okay, so i've had this anemone for about a year now and for about a month now his top portion of the body is really deflated. I thought if I would give him time he would get better.. Then I've tried new bulbs.. Even just recently bought a new 6x39w fixture. He looks alot better, more inflated and definitely more open. I also thought about maybe I wasn't feeding him enough. So I fed him for 3 days straight a big piece of shimp and it kinda made him go crazy. While my pumps were off, I went to go do something and 2mins later(I wish I would of took a picture) all I saw was half of the tank where he is at was full of this powdery stuff that kinda looked like micro bubbles... You could say I learned my lesson from that and he would of probably kept on eating if I didn't stop lol. Anywayz, he still readily take and devours food. He just looks weird. I also don't really see my clownfish ever biting him that much if not ever. Any ideal what you think could be happening?


Here's some pics..



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