to 
J65
Seedlings usually stay in a humidity dome untill their old enough to come out. For seedlings you don’t need a big light. I use a small 2’ T5 light for them. Awesome thing about that is you can keep the t5 super close without harming the plants I.e heat. With your light just use the hand technique. Put your hand under the light palm down, move your hand up and down, feel the heat or discomfort? If it’s uncomfortable for you, it’s uncomfortable for them.
Where are my manners. Welcome to the site!!
The only time I use a humidity dome is when I'm cloning
Not saying it doesn't work 
but I wonder how mother nature built her first humidity domes 
Most people I know will put there beans in a cup of spring or mineral water for 18 to 24 hours
Then they move it to a wet paper towel on a plate to germinate in a warm dark place
then they put them into a seedling starter mix in solo cups with holes poked in the bottom
DO NOT use soil premixed with nutrients
this will harm or kill your babiesAnd then under a light...no humidity dome...Like I said, just because I don't do humidity domes doesn't mean it won't work...it's just unnecessary IMO...here's that same little girl 2 weeks later
And 2 weeks after that
