Dear Steve,
Don't know what part of the country you are in. This could make a difference
with low light levels in winter, however your biggest problem would seem to
be soil. Few if any Nepenthes grow in sphagnum in the field. In Florida I
use a mix of equal parts fir bark (orchid bark), tree fern fiber, and
horticultural charcoal, all in 1/4 size pieces. The media is mixed well and pr
e-soaked for at least 24 hours. As this is an extremely well drained mix
watering must be carefully watched or plants may fatally dry out. You could
point out that few Nepenthes grow in this soil in the field either, but it
seems to work very well in this part of the country. The only ethical
considerations may be the use of tree fern fiber and this could be left out
entirely. I do not use any sphagnum or peat to grow Nepenthes except maybe
for N. ampullaria or bicalcarata, plants that normally grow in peaty wet
environs. This mix is good for seedlings but again watch the drying.
For slime call O.F.E. and asked for the replacement product for 'Physan'
(name escapes me). Controls fungus, algae, etc. Follow directions and test on
plant you do not value highly.
Lastly, use the purest water available and do not believe this nonsense that
Nepenthes like hard water. Good Growing!
Cliff