"Sugar ants" is what they call em here. When I was a kid my neighborhood pals and I used to lay a strip of caps over an ant and stike the cap with a sharp rock and set the poor guys on fire!
(sick kids I know...)
I just don't want to end up with a "pile" of bugs in the pitchers and the plants start smelling bad. I guess worms ought to just disintergrate anyway as they shouldn't have a chitinous exoskeleton like a cricket or mantis.
Here's one of my 29G lowland tanks overview
<image src="http://the-natural-aquarium.com/29lowland-1-7.02.jpg">
pictured L-R are: truncata, ventricosa (F), X Morgana (B), alata(F), X Judith Finn (B) and bicalcarata
Here's a close up of the false bottom (in another tank in which I used larger PVC piping).:
<image src="http://the-natural-aquarium.com/falsebottom.jpg">
that IS a D adelae plantlet growing in a clump of java moss in the water portion!
I've also made false bottoms that will allow me to hold like 3" of water under the plants but I haven't found any problems with humidity by having a shallower water pool and it give me increased vertical growing room. Humidity in these tanks runs about 85%+ at all times-had to wipe the glass to take the photos! I pack as much flourescent light on as I can (29 Gallon tank is 30" long so I use 4x 20 watt tubes and surround the tank on 5 sides with tinfoil to make a nice "light box". the crimson flushes on my alata pitchers shows me that he's happy with it!