I started with 2 rbta's 18 months ago in a 55gal... and I now have 8 of them due to splitting. I only feed a small chunk of shrimp once a month or so. Its a good idea, if you want to keep them, to anemone-proof your powerheads. Mine are a beautiful fluorescent orange with a lime-green base, with one exception.... I have one that turned out rather drab in color. Weird. Also, I noted one of them did a 3 way split...that is, 1 split into 3 in one go. What happens when mine split is...one will always stay where is was, the other will wander until happy. If the anemone reaches a spot YOU like, feed it and you will have a better chance of it remaining there.
btw: my gold-stripe maroon is in heaven... 8 anemone's, no competition

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