I recently finished growing 4 autos (Bruce Banner, Tangerine, White Widow and Critical, from Seed Supreme). The Bruce Banner and Tangerine produced mostly loose, airy buds, while the WW and Critical gave much denser buds (except for the lower-down buds).
All four were started under an AC Infinity Ionboard S33 light, but the WW and Critical were moved to another tent with an Iongrid T24 light, at day 27 of flowering for the WW and at the start of flowering for the Critical.
Is it likely that the Iongrid T24 light was responsible for getting denser buds, or is it just genetic differences between the four strains?