the way to tell if your getting to close is that the top buds will curl in the pistils and look very unappetizing, and sometimes the upper leaves will form "canoes".

if this happens, back off 2-3 inches
hybridlove420 Reviewed by hybridlove420 on . HPS close to canopy necessary? I am aware that in veg haveing my T5's close to the canopy is helpful in managing stretch. In flower, should the HPS be close to the canopy or does it matter? It's 6 inches from the tops right now and the girls are still stretching (I do expect the stretch in the first week). Rating: 5