Thanks. Tank is a 30x30x30 which is basically the smallest size I thought I could get away with for this guy without needing to worry about upgrading to a larger size. During summer months when the outside ambient lighting is brighter the anemone can expand to 24" diameter. Right now (in the video) it is probably closer to about 18". There are other factors though, sometimes it just is bigger and sometimes it just is smaller. I guess its probably related to how much food it catches in a week versus another and so on.
Lighting is a single 250W DE centred right above the anemone.
You could try T5's I suppose but I feel a halide is better for this species. At least with this one in particular, I find that it is very strongly attracted to the direction of the source of brightest light. With T5's, the light tends to be uniformly distributed, whereas with a halide, there is a "hot spot" so to speak where the light is most intense. I found that when I had two halides over him (in a previous tank I had him in), if one light would be burned out or whatever, he would move to be under the light that was still on. This could happen in a manner of minutes to hours. Ie., one time one light didn't turn on right away, it had only been 30 or so minutes before I noticed, but it had already moved to be under the other working light.
By having the one halide directly overhead, I find that it works to help keep him "rooted" to one spot. Ie., the anemone feels no need to wander to find "a better spot."
T5's might work OK for the species but then it would be doubly important to ensure the flow is high in the spot you want him in, also it helps if it can be in the highest spot in the rockwork. The other thing I've noticed with this anemone is that if it can sense a path "up" it will try to take it. That's another reason I have the tank as 30x30 footprint, it hopefully is large enough that it won't find the glass and then get tempted to walk up the glass to the top of the tank.
It has been in this tank since late 2005 so about 2.5 years now in this current setup. Seems to be doing OK.
I don't currently have any clownfish living in this tank .. I'm hoping to one day have some pink skunks or onyx clowns maybe. I had wanted to try maybe some chrysogaster or akindynos clowns but that was before I realized how hard they are to find in my area, plus I read that they are more prone to things like brook so I gave up on the idea of finding some more exotic species of clown for now.