oKAY, ACTUALLY i HAD THESE ON A LESS ppm, THE LARGER ONES WERE TAKEN OUT OF THE FLOWER ROOM, 'CAUSE THEY WERE BEING STUNTED, AND I WAS RUNNING OUT OF ROOM. SO THE TALL ONES AREN'T GETTING THEIR FAIR SHARE, BUT THEY AREN'T BLOCKING AANY LIGHT FOR THE LIL' ONES.I ONLY USE THE SHOP LIGHTS ON FRESH CUTTINGS, TILL THEY ROOT, THEN I VEG UNDER A 400 mh (HORTILUX) LIGHT. THEN I FLOWER WITH A 1000 hps (HORTILUX) LIGHT. LET ME KNOW WHAT YOU THINK, GUY!! THANKS DONNIE