Tamlin
Yes my P. primuliflora is very wet, water currently level with the top of the pot, I do allow this to fluctuate a bit though. It lives quite happily in semi-shade in my conservatory (min temp 8C). Plants occasionally die off, but I keep up propagation and I've had these plants for over three years now, they flower profusely each Spring, a lovely sight.
I have my small (two tiny leaves) P. pumila housed in a terrarium (14hrs light, max day temp 25C, min night temp 15C, humidity 60-70%) standing in about 1/4 inch of water which I will allow to dry up before replenishing. Having planted the seed as soon as I received it, rather than in Spring, I thought it best to give the seedlings a nice warm, bright, stable environment to get going in. I will probably move the pot out of the terrarium in the Spring, but not into the same water tray as the P. primuliflora, which is full of Utrics as well as the Pings.
Cheers
Vic