Yup...they sound too close to me too. Best way i found is to put lights at the very top, leave them there, adjust plants for desired height with boxes , empty pots etc. I never have to though ,..just let the plants grow into the array. Budmaster 2 is my only light on right now , for about a month , and it's at the top, about 4feet to plant tops. Too much /too strong lights , on young plants is NOT good. They are simply not developed enough to properly handle it Demands on all other limiting factors increases a lot cuz plant has to try and use all that light...just sayin OK!