Rookwool

How to start seeds in room wool wat to have lights on n idont have a humidity dome

Rock

I always like starting with the paper towel method. I've never personally worked with rock wool, but I know you can keep your lights off until your seedlings sprout up. A humidity dome certainly helps with germinating, but is not necessarily essential (more of a tool for cuttings). Just make sure it's warm and your RH is up.

Also soak your cubes before hand with ph balanced water