As noted before, I've had the same RBTAs for at least 6 years. They've split many, many times, and there are tons of MAASTards with my clones.
I currently have 2 in a 6 gallon nano (don't try this at home), along with some LPS and 2 clowns. They split about every 6 months or so, and do very, very well. They are under a 75w MH, but I've kept them successfully under T5s as well - and of course for the few years I had my 215 as a reef tank.
These anemones are VERY happy, and eat very infrequently. They only get what the fish get - that's all. For at least the last year, the only food they have gotten is Spectrum pellets that the clowns don't manage to steal from them. I almost never target feed them. They DO depend upon photosynthesis, and as Allan says, lighting can be critical - I believe it's been critical to my success. I've not been insanely successful in much over the many years of reefkeeping - but this particular animal has been, far and away, my most successful.
Bill
215g FOWLR... and anemones, GSP, gorgonians... carp, that isn't FO!
"I killed my first SW Fish in 1971..."