Yeah don't need a dome, but if you wanna help
the situation you can mist them. I find a good
mist in the morning and one in the middle of their
day and it helps things progress.
I always left my pump on 24/7 for circulation
purposes but some people stick to 1min on 4 off.
One thing to watch out for is your res temperature
getting too high, if it does having your pump cycle
is a good way to reduce heat.
Otherwise aero cloners are pretty much set and go,
should have clones in no time.