you want the soil to be wet untill it drys to a depth of 1 finger nuckle, well thats what i do.
my 250 takes a while to do this, 400 and 600 are much faster.
you have moist soil by the sounds of it.
what soil mixture are you using? also, a pic would help too to guage the ratio of perlite/vamiculite or whatever you have used to go with your soil