Okay, thanks for all the help guys.
rssjsb, here's the answers to your questions.
How long have you been up and running?
When I first posted, this guy was at the LFS. They are just getting back up-and-running after an HVAC upgrade, and weren't prepared to handle anemone's this soon. Again, this anemone was just dropped off at the LFS by someone who was giving up their tank. I told the LFS my setup and they said that I am able to support this anemone and asked if I would do it until they were up and running. I double-checked this info with a friend and he seemed to agree, but had concerns because my tank was so new. Unfortunately, my tank has only been up and running for less than a month. Even though the tank is so new, should I be able to keep this guy for a while if I do EVERYTHING right? Or should I try to re-home him?
Can you give us some details? Lighting, sand depth, what kind of flow you've got?
My tank is a 65G tall which measures 18D x 36W x 24T. The sand bed is from 1-3 inches, but probably a little under an inch where the Anemone has made "home." I know this is probably a little concerning, so I'll try to find methods to move him and make the sandbed deeper. How deep should it be?
For lights, I have an AquaStyleOnline 48-LED set plus 12 additional Violet LED's. There's 24 x Royal Blue, 12 x 10000K White and 12 x 6500K White. I previously had them dimmed quite a bit, but I've turned up the intensity since I've put the anemone in the tank.
For flow, I'm flowing about 380GPH through the sump according to the calculator, and I'm running 2 x Koralia 750GPH pumps, of which I usually only have 1 turned on at a time.
Anything other things you need to know?
Again, thanks to everyone for the help.