I have had mine for almost 18 years in my 58 gallon reef. It was under 250w MH light for a long time but switched to LED's (180w 15k Maxspect Razor
) about 3 years ago. The anemone was larger under the MH light, but seems fine under the LED's. The size difference could also be from me feeding it less (and smaller) food over the years. I used to feed it whole krill and silversides but no longer do that. I feed a mix of frozen mysis, brine shrimp, and other frozen foods to the tank and it catches pieces of that. I also occasionally squirt some directly into it with the turkey baster.
It is a male, it has attempted to spawn twice and turned the tank an almost opaque white both times. It cleared after several hours with no ill effects. It lives in the rockwork and may have its foot in the sand under the rocks but it is hard to say for sure. It wandered a little one time unexpectedly and I did lose corals. It went back to it's original home after a few months and has stayed ever since. There is fairly decent flow in the tank and it's tentacles are being blown around by the current most of the time by 2 mp 10's, usually running at about 90% on reef crest setting. It hosted a breeding pair of gold stripe maroon clowns for about 3 years, but they died when a heater got broken. It has been home to a breeding pair of occelaris clowns since 2006. Here's a couple of shots from over the years. Good luck with yours if you decide to get one.
IMG_1310 by
Randall Douglas, on Flickr
DSC00171 by
Randall Douglas, on Flickr
clowns spawning by
Randall Douglas, on Flickr
FTS 05 1-13-15 by
Randall Douglas, on Flickr