Needing some advice for my Heteractis magnifica!

[Ticketyboo]

Hi everyone,

I have a Heteractis magnifica and introduced it to my new tank after cycling the tank for a month and all was well. A few weeks later it went walkabout and placed itself behind my live rock wall which is next to my power head and stayed there for a day or so. Trouble with that is that it shelters itself from the Lights and i only had CF lights and it withers away and all its tenticles shrink and turns dark green. Its done this twice in 5 weeks...

I have since figured out that it might have been bothered by the powerhead blowing sand near it as there was alot sand debris on its base where it was located initially.

Now i have MH 2x175 lights on there... and its still going walkabout... any advice from anyone?

I already lost one annenomie, a condylactis when it went walk about on the otherside of the tank straight into my skimmer pump intake. Do you think perhaps i shouldnt be using powerheads on the lower part of my tank? as it does disturb the sand and they are on a timer as part of a wave machine. I also have 2 power heads at the top of each side to generate current.

Its tenticles are not as happy as they were when i got it, my clowns took to it a few days ago and i was so happy, but then it went walkabout again.... help!!!