Should i kill my self!?

Hi i recently put my cuttings (which i were sold in a root riot cube with a few roots popping out. I potted them in my iws system and its been a few days and the roots are growing more slowly than usual, how comes? I keep on CF 16 and feed 6 times a day for 10 min. The root riot block is placed just exactly on top of the maximum flood level without no rockwoll? Is this ok? Am i worrying too much? Please help :'(
 
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