Having noticed a distinct absence of colour in these Neoregelia, I moved them into a slightly warmer position with higher light levels this month. They seem to be much happier with more light, as they have started to grow faster and the new foliage is producing more of the purple colouring, whereas they had previously been almost totally green. The two pups are reaching the size of the parent and space is becoming a bit limited in the very small pot, but, being an epiphytic species, it shouldn't prove to be a problem until my new pots arrive. The only possible issue, particularly with the new position is ensuring that they are getting sufficient moisture, but regular misting seems to be keeping them happy enough.