i assume when you say spray that you are using a water bottle and spraying the top of the soil? i want to give the soil a good soaking for the first time. if you have sufficient pots, meaning adequate holes to drain with, then you will not "drown" your plant. but back on the spray bottle, lose it. i have seen way too many people in there logs burn their plants because they were water bottle feeding them.

and about the propagator, im not sure. hopefully someone more experienced will pop in and help you.

best of luck with the endeveurs(sp?)