New 12" Plastic Orchid Pot

[peeweelovesbooks]

Hi everyone.

I purchased a HUGE phal from Baldan's several weeks ago. It's currently potten in a 6-6.5 inch ceramic pot, but I would say that the majority of the roots are growing outside of the pot, and the ones that are inside the pot are really jammed up in there. I can tell that the medium is pretty much done with.

My question is: how big the pot? I have seen some 12" pots online,but I'm not sure whether these would be too big. My secondary concern is the amount of medium I would have to use. I mean, the phal really is huge. Should I add some cork/CHC to whatever mix I use so that it dries out faster?

Also, has anyone seen/used these? are they sturdy and do they provide good aeration?

I don't want to kill it, which is why I've hesitated to repot it.

Thanks everyone.