Day 36 update: Switched to flowering nutes this week and I was debating on a flush but the girls look pretty healthy so I'm going to hold off for now. I am using it at 50% strength and if they need more I will adjust accordingly.
Day 37 update: Had to flush all 4 of them. The soil looked bad. The soil prep in the beginning consisted of FFOF, 15% extra perlite, 10% extra earthworm castings. I will lay off the castings in the beginning of the grow next time.
Day 42 update: These girls are still going vertical and they need to stop! On average, they are around 29" tall and very bushy. It has definitely filled out in the tent, as I have no more room in there. I have one of the Auto Cheese NL that hasn't even begun to pre-flower yet and that's my tallest girl in there. 2 Auto Cheese NL are flowering nicely, and the Blueberry Domina is still slow to flower, but it's playing catch up.
Looks good! Sorry I missed this great first grow, but late followed! Will follow your profile!
Supposed dates are just that unfortunately and all too often they're fudged marketing BS. For what it's worth you can flush for *weeks* in soil so I'd just water until they're ready either way.
If you're interested, here's the harvest guidelines I use:
http://www.growweedeasy.com/harvest