My rbta's are officially bulletproof. After doing a major cleaning I noticed some sponges in the first sump tub. After I got my glasses, I noticed one had some pink stuff. Turns out these are rbta's. These were the remnants of the 4 or so full size anemones that were blended in my Tunzes. I thought they had to split. Didn't know they could grow from chunks.
I put 'em under a LED I had laying around, so I might as well grow 'em.