wow you have a good collection of nepanthus what is the media you use, recently i had a Venus & fly trap & a sarasenia both died after two weeks, i have re poted it with coconut fiber dust is it the resent for that, for nepanthus i use coconut fiber dust, they are doing well.
Sellanka,
for the other carnivorous plants you describe, follow the usual CP advice, plain peat and perlite mix, always waterlogged, no additives, no fertilizers, only rainwater (or deionised, distilled, reverse osmosed).
Dionaeas and Sarracenias are not tropical plants as the Nepenthes, and would like to have some cold weather in winter to get dormant.