5 out of 6 plants have nice and vigorous growth. Plant #2 in the 4x4 looks nice and healthy, but it is way behind the others and still hasn't pushed out any flowers. I finally bit the bullet and swapped out my 2x4x60" tent for the 2x4x72" tent and it made a huge difference in vertical space. It's been a little cooler in the tents than I like so I'll try to adjust things so they get a little warmer.