| | Re: How are you growing C.bullosa?
Ive had good results from using new AS Amazonia for emersed crypts. I was forced to use it because like you I didn't have a whole lot of used stuff laying around. Surprisingly the crypts haven't melted when transplanted into the new AS. If they have melted, I've attributed it to the plant being in a poor state to start with and probably would have melted regardless of what media it was transplanted into. Seems like crypt roots are very tolerant of different conditions, but their leaves are not.
Now I can tell you never add new AS to an established submersed tank. It will definitely melt your crypts!