One more hint regarding Nepenthes seedlings:
One should be aware that Nepenthes seedlings like a lot of air
humidity. Unfortunately mosses and algae favour similar conditions.
Mosses can be a serious problem and seedlings might have to be moved
early which they absolutely dislike on the other hand. These problems
mainly occur with slow growers like N. lowii or N. edwardsiana High
quality peat (when sowing on peat) helps. Do never boil peat in order
to kill spores! The spores are killed but nutrients seem to be set
free when the remainders of Sphagnum are boiled and soon the surface
will be green by algae and mosses as new spores have much better
growing conditions.
Andreas