That ebay link failed.
There have been several discussions on these forums about the ineffectiveness of peltiers (this may stem from over-enthusiastic expectations as much as anything) and there are lots on other terrarium fora about how peltiers fail. Expecting a more than 5-10 degree differential out of peltiers seems to be wishful thinking. (i.e. expecting your tank to be more than 5-10 degrees cooler than your room). This assumes that the "hot" side of your peltier is at or close to ambient room temperature; if it's not, you're going to be fighting a losing battle - you'll need a good heatsink and fan, and for the peltier to be able to transfer heat easily into the heatsink for this to stand a chance of working.
Many suggest using an aquarium chiller to achieve effective cooling [use the chiller to cool down a waterfall or similar] (or even modifying a wine cooler to serve as a terrarium).
If you want it, here's a reasonable write up of someone using peltiers for highland nepenthes:
CPs Terrarium: Cooled Terrarium Note how massive his heatsink is
---------- Post added at 05:52 PM ---------- Previous post was at 05:47 PM ----------
Another page I read recently also made the point that if you're looking to shift lots of heat, you want to use peltiers in parallel (next to each other); if you want to cool a lot you use them in series (stacked) - and if you want both, well, I guess series/parallel it is!
Hybrid Mode
