Don't ya think that if "water" were the culprit so many growers, even experienced growers, make it out to be, that I might have noticed it causing "rot" problems with my Mexican
Pinguicula? I've grown and propagated literally thousands of Mexican
Pinguicula over more than 6 years now. No rot from being too wet. Maybe rot is caused by being too wet and too dark, or just too darn dark (period). I cannot say that I have not lost a single plant, but I can honestly say I can count on the fingers of one hand, those I have lost.
Perhaps, before we go blaming "water" for
Pinguicula rot, we might want to examine other environmental factors that could play a part in the Wet = Rot hypothesis.
I can't imagine that they grow where it is all that "dark". After all their homeland is in the mountains of southern Mexico. Even on north slopes there must be quite a degree of incidental light. And, air movement, and drainage, perhaps there is a bit of both to explain why they grow where they do.
No terraria, never had any terraria. Just shallow plastic trays.