Just to share, I drilled extra holes on all my plastic pots for nep. I find it's easier to control the media from getting too dry than getting too wet especially when I'm growing all my plants outdoor during rainy season.
If a nep belong to a epiphytic species, I just drill more holes....
and adjust the composition of the media accordingly.
Pot size also affect the natural rate of evaporation of water coz pot size is directly proportional to it's volume.
I feel all these factors are important points to successfully grow any nep species.