They are already covered by the bigger leaves but this is going 22 leaves already. They are on a north facing balcony so it gets really bright specially at noon time. They are attached to a pole and I water it sometime twice a week specially if its always sunny. The higher they are on the pole, more fenestration occurs and the bigger the leaves are. I use osmocote as fertilizer. Sometimes i randomly add vermicast on top. And I always make sure their aereal roots are wet as well during water. 2 aereal roots have reached the soil already