whats the trick with rockwhool

I have started four beans in rockwhool and all of them died. I have two more in the rockwhool and they have popped out but the seed is still on the top. The last four all turned brown and died. I started these under the flouro lights thinking that maybe I'm shocking them when i pull them out of the dark closet and putting them under the lights. I have not watered them since they have been put into the two inch rockwhool, but the bottoms are still pretty wet. Thank you any advise would be appreciated.

The trick with rockwool is you have to soak them in PH'd water for a day, otherwise the PH of rockwool will be too high and kill about anything you plant in them.