i planted mine in pure charcoal (work best for my environment, clay or plastic pots doesn't matter) and my next best friend is fern slate. i had no luck with moss, they will grow very well initially but happiness would soon come to an end in the when they rainy spells arrived. speaking of the rain, the thunderstorm just busted my orchid netting yesterday. sorry, i had a very basic setup only.
i use 21:21:21 fertilizer and switch to 13:26:26 as the plants mature. and they have a "rest area" where i hang all the dormant plants till they are awake for the next feeding season =D
i am looking forward to see some of your catasetinae pics in the future. thanks for sharing your experience