I will be re-potting my Nepenthes soon because most of them are showing high pH stress from back before I got my water pH under control by using RO water and additional treatment with hydroponic pH-down solution. Is there any disadvantage (besides cost) to just growing everything in long-fibered sphagnum or lfs with coarse-grade perlite added? I have a few plants growing in pure lfs, and they are doing very well.