At long last. 
here, check out the first couple posts in this journal. I’m mostly just whining for upwards of 400 posts, but there’s some helpful stuff from @Underthestairs and others along the way. Seeds in Rockwool
Keep the humidity dome on. Do not water it. Check to see if your rockwool is drying out, and if so, then water it with ph 5.8 water - no higher and no lower. Rockwool randomly adjusts its own ph when it feels like it (weird do say for an inanimate object). Light meh, warmth is better.