How to deflask?

[brewmyster]

I just recieved an Onc. Sharry Baby 'Sweet Fragrance' flask from peaandshel, Carmela Orchids. I am new to deflasking. I would like to know best way to do this and what would be best media. I have attached pix of the flask and the media I use for my phals and small root orchids. This mix is small bark, charcoal,sponge rock and some coconut chips. I was thinking that I would need to add some Pro-Mix to this media mix for these small plants.

Any advise would be much appreciated

Thanks
Mark