A little small for 3weeks i would say but there looking healthy!
What lighting are you using and cycle? I'd let them grow a few more weeks before taking cuttings too.
They can triple in height when you flower, so take the height of your area and devide by 3 and thats when you want to flower...
keep the lights on for 20hours aday , 4 hrs off. get a time too.
2-3 weeks would be good for you then let ther flower by cutting the light to 12/12
you need to get minimun 25W cfl's.
2 on top 3 around her for now.
see link.http://en.wikipedia.org/wiki/Compact_fluorescent_lamp
Dude, keeping it natural now will be a big dissapointment for you.
you might get a little smoke but the quality will not be good.
YOU NEED LIGHTS! 20/4 lighing for a few weeks then flower.
have a look around for peoples pic
Yeah natural sunlight is the best just it is not doing you any justice, uk sunlight is shit.
You are better off putting them under compact floursent lights, they will grow quicker, bigger and bush out alot more.
see my pic of my snow white 3 weeks in under cfl's, there is no way she would of...
Streched alot, get it under some cfl's if you can.
Stop watering everyday, that is not good of the plant, the roots need time to dry out in order to grow.
you need to put her under 12/12 lighting to get her to show sex also.
Good luck with your grow
ok, dont chop now because she wont grow anymore.
All she will want to do now is bud, your plants need all the help they can get.
more 2700k cfl's, bloom nutes , and distilled water. also get a fan blowing at them to thicken up the stems, only a slight breeze though.
How tall is she?
Pre Germ 4-5 days, 13mm deep,
seed in to soil, 7-8 days, 13mm deep
Roughly that is,
I do think just dropping the seed in the soil is better, you dont have to handle at all then avoiding the risk of damaging them when you transplant.
How far into flower are they, if they are more than 2 weeks in i wouldnt bother, she wont grow any more.
They are streched too, use nutes to help her along..
Get more light on those babies, 2700k for flower & 6400k for veg , but a 2:1 mix or 2700k and 6400k would be better.
Rain water? I...
i dont think foil is that bad to use like everyone says it is, yes their is better stuff around but foil will still do if you cannot get anything else.
Dont worry about hot spots caused by foil, those tubes dont get hot enough to create hot spots.
You can use 24/0 , 20/4 or even 18/8 to veg, i...
i SUGGEST A BIGGER GROW BOX OR LESS PLANTS.
i CAN ONLY SEE 1 FITTING IN THAT SPACE, I HAVE 1 PLANT GROWING IN A 2FTX2FT BOX AND SHE HAS PRETTY MUCH FILLED IT UP.
A PROPPER PLANT POT WILL BE 10" DIA OR SQUARE, YOU DO THE MATH.