As far as I know, every bromeliad produces pups. To encourage pups on a flowered plant, lean it slightly to one side. Anywere from 15 to 30 degrees lean is good depending on the type. The pups should grow sooner on the side which receives more light. Note: This usually doesn't work on flat bromeliads (i.e. most cryptanthus). To speed up flowering and pup production on an immature plant, place an apple in the terrarium with the plant. The fruit releases a gas (ethelene?) This gas effectively ages the plant, so it thinks it is mature and it flowers. However, forced flowering reduces seed/fruit yeilds considerably. So if you want seeds, wait until your plant flowers on it's own. Also, this method can be unreliable at times because the ammount of gas released depends on the age of the apple. To little gas, and no flowers, to much gas and every bromeliad in your tank will flower. So it is best to isolate the plant to be treated and try several apples in succesion.
Hope it helps,
Mike
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I am the stereotypical teenager video game player couch potato carnivorous plant grower nano reef aquarium enthusiast coin collector amphibian/reptile keeper internet surfer mountain biker skimboarder sketch artist formally known as Mike. My sign is a semi-colon_;