I’ll take those bonus points - my Nepenthes get Kelpak monthly just like my orchids (and Quantum, but never fertilizer), at the same 1:250 concentration.
I have a N. ventrata that was acquired as a single growth in a 3” pot in July of 2020, which I transferred to a basket of sphagnum. It soon grew two more, that didn’t take to the cool, dry winter indoors. The following summer, it grew to have 7 vines, and this year it just exploded.
Kelpak has been used on every kind of crop imaginable, going back some 40 years.
Here's a link to the US 1L label, which has recommendations.