planted 2 days ago do i water?

I planted my germed seeds 2 days ago (almost 3 now) they haven't sprouted but the soil is extremely dry and hard so i will water them and then it will just dry back up in a little while. I don't know if i should have but i got them in little starter trays. I heared people say not to water them but its so dried up and hard . I also have lights on them for 18 hours a day and a fan.

Um yeah if your soil is dry give them some water.they need moisture in the soil to grow i hope u didn't kill them.

yea, the less volume, the more watering required

I started germed seeds two days ago on Saturday, I gave cups of soil a healthy watering before I planted the seeds. I kept the cups covered w/ plastic baggies to retain moisture, and today 4/8 have sprouted. I haven't watered yet either btw.
Make sure the soil is actually dry, not just the top soil. Kinda rake the top w/ your finger, and if it is dry about 1/4-1/2 in. deep then water. I found a moisture meter at home depot for a little more than 2$. I suggest getting one.