I used to have one of these plants! I repotted it soon after I bought it but it didn't last very long. I don't remember what medium I used... I may have used a mix of moss and coco coir but I'm pretty sure I didn't use perlite. Clearly this isn't your first rodeo! I thought the plant would be good for my home since we seem to have a naturalized population of fungus gnats living and breeding in the normal soil of the rest of the plants.