How do you water plants in sphag?

Hello,
I decided to move my phalaenopsis seedlings from chc into sphagnum moss. They will be potted into same small clay pots. I have ordered some long fibered organic sphag and here is the question: how to water? With bark and chc I just soak whole pot in the water for 15 minutes, then drain and that's it. I never had anything in sphag and it seems that soaking it would result in too wet conditions and I would have an urge to squeeze excess water out.
Do you spray it until it is just moist or run water through the pot?
Please share your technique with newbe.
Thanks a lot.