Hi Holly I haven't used anything, I find gesneriads really easy to root if I keep the soil moist, or place them in something that keeps the moisture in (like a plastic bag or something)
I do use Shultz's liquid plant food (at low amounts) every other watering.
What are you trying to root??
I like your bead work. Something I used to do but haven't in a while, so now I have boxes and boxes of beads and supplies waiting
Cheers