Man....an 18 hour day should be amazing for autos!! We only get 15.5 on the longest day of the season on June the 21st
BAhahah I may have exaggerated the 18 hours because I had a few margaritas down the street last night and was pissed when my plants went from flower to veg the last time. our daylight time is only 14.5 hours here. But my girls faired well last time just needed to be autoflowers. I'll post pics of the greenhouse later.