Hi big dawg
Plants are looking happy bru. How are the temps around that box? I always get a bit worried with cardboard and electric items. And what is the reflective material you are using inside the box? If it's foil I would recommend changing it to mylar. I believe you would be able to pick some up cheap somewhere in the US (not from there but they sell them at camping stores, sports stores, etc)
Love the kush flavours, I am also growing some OG Kush, fantastic stuff!!! Shame about the lamp you bought. I had one of my girls under a 300cfl for flowering for a while, but as soon as it went into the hps environment it just took off.
Peace and good luck with it all.
DST