This is the reason I like this Portal. Everybody develops their own ways of growing in Dwc here. That just shows me there is more than one way to be successful at this. ❤

My light from start to finish is a 730w led w/controller. I use a quantum par meter to do this as well.. I usually run 200-245 μmol/m²/s for my seedlings . I have not burnt a plant up yet...notice I use the word yet lol.            I use general hydroponics  nutrients (cheaper vs some others. )   I get good results from it                                I like a ph range of 6.0 to 6.3 . In my grows if the ph goes up higher than 6.5ish she starts to yellow and is not happy.                                                                                                                                                                      I tried cooling my water down but I live with 71-73f  I use hydroguard and Sensizyme . I use dechlorinated tap water

I take a seedling that is usually 2 days old or when I see the root just poke out of the rockwool and put it in the net.                                                                                                                                                    

Those are the things I do along with what has been said                          

Happy growing Steveo