Even after years growing these plants you still can't figure them out sometimes. I've had two dorotheae C300 specimens looking very similar in their size and overall health. One has regenerated in an exemplary manner and has doubled in size since. Perfect, fat and healthy looking plant! Beautiful markings, too. Meanwhile the other tried to grow two heads, then regenerated with only one head again and obviously failed to grow roots while doing so. Now it's refusing to drink and is slowly dying. Same pot, same conditions, same everything - different outcome. Go figure!
The other three-headed and large-windowed dorotheae is doing fine. I normally remove remains of the flower but this plant flowers from only one head every year and I'd like to know if it's the same one. :)