Thanks for all the comments. I'll try to answer all the questions...
The tank is approximately 18" x 12" x 12".
The back and two sides have adhesive mirror film applies.
The lighting is 2 x 30W warm white CFL, housed in a home made reflector.
The base of the tank has a ~1" layer of horticultural LECA.
Atop of the LECA is weed control membrane.
Atop of the weed control membrane is ~4-6"
Moorland Gold.
The purpose of the LECA is to to provide a water reservoir. The weed control membrane stops the peat from filling the voids between the LECA and to help stop the peat becoming saturated, as the water drains through the peat and into the reservoir. The LECA and weed control membrane provides capillary watering to the peat above.
This setup has existed in its current state for approximately 1 year. Up until a few weeks ago the lighting was 2 x 32W daylight (full spectrum), 6000K, 1800lm CFL, but I was not happy with either the growth rate nor colouration - they mainly stayed green. I then changed the lighting to 2 x 30W soft white, 2700K, 1700lm CFL and since then they have taken on good colouration, as you can see in the pictures, and are also putting out new pitchers.
The
Cephalotus to the left are "Big Boy", to the right are 'Hummer's Giant' and those in the middle are typicals. The smaller plants dotted about are seed grown. Most the plants in there are indigenous to Australia, apart from the
U. Sandersonii, which is an unwelcome but pretty much irremovable intruders.