@Findthelorax Until those roots have reached the nutrient solution and the plant has started actually growing 
you don't need the solution to be so "hot" ie full of feed 
Also PH should ideally be lower than 6 to allow all macro nutrients to be uptaken 
5.7-5.9 is good 
Watch the temps of the nutrient solution as it will effect the health of the plant 
and oxygen levels 
Keep light away from the roots 
Good luck