Apparently my RBTA split in two on Sunday. It still had a seam on each half when I found it Sunday night, but this morning both halves looked mostly healed up. I'm kind of unhappy about the split because I liked the larger anemone for the clowns and now I have to figure out what to do with the second one.
Here they are minutes after the lights came on, so they're still waking up and not fully inflated:

Here's a close up of the front anemone, at the same time as the picture above. The one behind is about the same size.

This anemone(s) has never been target fed, but it probably picks up whatever frozen food it can that drifts by, aided by the two clowns. Its tentacles have never been particularly sticky, though. This is the same anemone as in my avatar, originally from Kyle. I'm not sure whether it has grown any since I got it from him a little over a month ago. The clowns are currently going back and forth between the two. It sits ~20" below a 250W Iwasaki in a 30G nano reef, with Remora skimmer and two intake-filtered 500gph powerheads. Temp is 78-81F, sg 1.025, water params normal for a well-established tank. Tankmates include the two young ocellaris clowns, several chromis, a 6" lawnmower blenny, and an army of crabs and snails. Also various SPS frags. No softies, but the caulerpa occasionally pops up as visible in the pictures.