Moving into week 4 I bumped the feeding to 1/4 strength and they seem to be loving it with using 1 1/2 gallons per all 4 plants. I'm really happy with the growth that has gone on from last week til this week. They are real green and getting bushy. I have 1 AC that seems to be leaning more Sativa side, but we shall see. I am continuing to LST throughout the week as I'm checking on them. I'm trying to maintain my light being 30" from the tops.
Watering: I have to water everyday, with that being said, I will use plain tap PH'd water (dechlorinated by sitting out), then the next day is a nute feed, then plain water, then nutes and so forth.
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