repotted my beloved N. Campanulata

[sooxiwei]

trying out on new thing, aquarium pebble stone, the bottom of it is some construction stone, entire idea is to have a more airy medium for it

after a week, most old leaves turns black from the edge...I guess it's over watering as I've been watering it on daily basis...hopefully it does survive and grow well

[paphioboy]

IMHO, that is WAYYYYY too dry for a nep. Aquarium stones are very smooth and hold basically zero water. If you want to use a particulate medium instead of sphagnum, I suggest perlite, diatomite, LECA (expanded clay balls) instead.

[marvin1997]

I agree with paphioboy, aquarium stones just let water flow through

[sooxiwei]

yet it already show signs of over watering when I only water once a day with very little water...

[marvin1997]

Wow it's a weird plant indeed lol Maybe it needs more light and humidity?

[paphioboy]

Black edges on leaves may not be a symptom of over-watering. Could be dehydration and low humidity too. Some species like bicalcarata are notorious for leaves suddenly turning black when humidity drops all off a sudden. IMHO, please change the medium before you lose your plant. Even epiphytes will not thrive in a medium of aquarium stone...

[paphioboy]

If you want airy medium, try any of those that I have suggested. Or charcoal and fernroot. These can absorb some water and give it up to the roots slowly. I plant my northiana (which has similar cultural requirements to campanulata - lowland, limestone grower, exposed location) in burnt earth. It is growing well.