Nepenthes Pathogen: Repot Fresh, Systemic Treatment

Weird pathogen on Nepenthes (mostly N. ventricosa parentage). Sawtooth structures, soil surface fungus. One plant lost. Treated with pyrethrin, Daconil on Plant A. Ideas?

Blind diagnosis impossible. Best broad-spectrum approach:

1. Repot all affected into fresh soil.
2. Spray plants with systemic insecticide (Orthene).
3. Spray new soil with sulfur or neem oil (prevent mold).

This covers pests + fungus. For definitive ID, send an affected plant—we'll examine soil and foliage. Contact via website for shipping instructions.