Mr. Aga....You wound me.
Interesting tidbit about campanulata (and merrilliana & bicalcarata as well, since they're in the same tank) - they don't require the rediculous humidity that I thought they did. Just today I put a thermometer/hydrometer in the lowland tank. To my astonishment, the daytime humidity was only 51%!!! I assume that the night humidity went up a little, but not too much. Despite this, my campanulata has been thriving. I have since reduced the size of the openning at the top to raise the humidity, since the rest of the plants weren't doing as well, accept for, surprisingly, the merri. The bical I mentioned does grow & pitcher, but not as well as I'd like...and forget about the northiana.
Anyway, it just goes to show you that conventional wisdom must be constantly questioned! The more I grow, the more I think that the secret to healthy plants is good lighting over good humidity (within reason, of course).
To address Mr Aga about campanulatas being slow: I'd say they're more
small than slow. They may seems slow because they don't get big all that quickly - but they don't get all that big, period. Mine puts out a new leaf & pitcher about every 6-7 weeks or so. Not a speed deamon, but no slouch, either. I would advise you try to feed yours little, tiny meals. Fruit flies or something - bugs too big will kill the rather fragile pitchers, but the plant definatly responds to food. Also increase your light (speaking from the point of view of artificial light. I haven't ever grown it using sunlight, just flourescents).