Need some guidance to replate protocorms

[camille1585]

I have 4 mother flasks of a Cattleya cross that have protocorms waiting to be replated. Most sprouted the beginnings of their very first leaf a few weeks ago, and I would like to get them out of the germination medium asap. But I'm not very sure how to go about replating them and have lots of questions going through my head.

First, how much medium do I pour in each flask? For the mother flasks I only put a thin layer (0,5cm), but they probably need much more in the replate flasks to grow roots.

What tools work best to move protocorms?

And at what density should I replate them? I want to avoid future replating if possible, so need them at the right density from the beginning. I ordered vented plastic flasks that have a bottom diameter (and height) of about 10cm, and widen out a bit.

And if you have any other tips, I'd appreciate it!