I would like to show some invention I did for Cephalotus and other plants with similar requirements.
The material is clay fired at 1200 C° still very porous. It sucks up water at least 4 in.
Here at first my two Cephalotus setups, the first with my older plant which grew before in a smaller container of the same material. But it was too small for a prolonged growth.
the other one in form of an tepui