Very first grow (soil+CO2) approaching harvest!!!

So my friend is growing three plants growing in soil under CFLs. The air is enriched with CO2. They're now entering the 8th week after the lights were adjusted to 12/12 and the nutes were switched to a bloom formula.

Each plant is from a different strain - the plant in the first two pics supposedly has a 'flowering window' of 7-9 weeks, the next plant 8-10 weeks, and the last one takes 9-11 weeks.

This is his first grow and he'd like to harvest them at a point in time that will result in a healthy yield but still produce a heady Sativa high.

Right now he plans to harvest once ~70% of the pistils are orange/brown. None of the leaves have turned yellow yet, although some of the bottom leaves on the first plant are starting to droop.









Thoughts, feedback?? How is this shaping up for a first grow? My buddy is pretty excited. PS- I just joined this site today and look forward to chatting with everyone!

 

Looking nice though still got a few weeks left till harvest i'd say. By this stage you should of stopped all feeds in favour of plain water which will improve the taste. Yep 70-75 per cent brown is the mark ya looking for you will also start to see the tops of the main buds gets longer and not swelling a sure sign the time is right.
Note. Not such a bad thing if ya cant get plant to yellow up on first try as long as you dont feed for last 2 weeks is good enough and will make a re veg easier if ya wanna go down that line afterwards.

 

very pretty

 

it appears to be waving to me