I'm always amazed by a nice looking N. ventricosa, I've grown all sorts of "difficult" Nepenthes species but somehow I've killed every form of N. ventricosa I've tried, Lowes store plants, gift cuttings, trades, nothing they all croak. I don't know what I'm doing wrong, I've had them in warm humid LL conditions as yours are; dead, I've had them in cold humid HL conditions; dead.... I'm gonna probly give up on trying to grow N. ventricosa. LOL