will still depend on plant size, air circulation, light....
the kee will be to kee soil damp not wet.... do not let dry out dont drown roots

Usually, a seedling flat kept indoors will only need water every few days. But always check the soil each morning and as soon as it looks a bit dry on top, give it some water.

I let the top 3/4 dry out and then bottom water until the top glistens.

I would not keep the soil damp or always spray when the top drys out.

The top of my soil will dry out in a day or so, but I wait until the top 3/4 is dry before giving them a drink.

Are you using Peat moss jeffy pellets?

Keriann~

You could also search 'watering' here, there are many posts about this.

Thanks for the responses!
I am using a Schultz potting soil mix that contains mostly peat moss.
I removed the plastic covers from the flats some days ago,and since then, I have been misting the soil with a spray bottle every day. We are currently getting some unusually warm weather for this region, and the tomatoes are springing up very quickly!