Thanks for those pictures Andreas.
It looks like the soil, in this particular spot, is quite dry. Am I right?
By reading the paper you published with Andreas Fleischmann and Joe Nerz, this specie should be grown in quite a bright or diffused light. At least, the plants from Amuri tepui - the ones you're sellling.
I also got plants of H. huberi by Gert H. from Extreme plants which originates from Angasima tepui. As these plants are supposed to grow in highland meadows (Gert's pictures show red vivid plants), I will grow them differently. It will be interesting to see the variation between them.
Truly,
François.