Environment or feeding have nothing to do with difference between seed run and clone run I've experienced . The result from different clone runs are more similar than the seed run,I don't know what is the making the bud different from seed to clone but I've noticed this variation with all strain I've cloned. The bud shape and resin content tend to be better with the clone runs, plant age might be a reason but it also happen with mature seed run. I think many growers have noticed subtle variation between seed run and clone run.