I ordered some tubers off of EBay and am wondering what the best way to get them to sprout is? They are mini sinningia.

I have heard to put them in a plastic bag with some perlite and place them in strong light (I have fluorescent).

I have heard to plant them with 1/3 of the bulb being exposed.

These are destined for an open top terrarium. I am wondering if I should just plant them directly in the terrarium?

Any thoughts would be very helpful! Thanks.