Does anyone have any expert tips on LED lighting d...

hey half alive, there's a more scientific approach basically analysing the spectrum with a PAR meter then figuring the optimal distance based on those readings. Dont worry there' also a more practical approach : LED lamp to plant distance should be 10-12 inches , if you notice some stretching then it's too far and if you notice too much penetration for example light burn it's too close. remember the main thing is that light dissipates exponentially, a difference of one inch is "this much" but a difference of 2 inches is four times less than "this much"... does that make sense ? hope this helps ! 🚀