I have a N. judith finn and it's growing well and everything, but the pitchers just won't swell. Do I need to apply ice at night or something?I'm growing it ina hanging basket with peat/perlite and topdresssed with lfs, not the green kind and the same problem applies to my bongso and it's in a pot with peat/perlite and topdressed with live lfs. I grow them outdoors.