Hey guys, first off i wanna say this is the best informational site i have come across on the net...
i am curently growing 6 baby girls and wass wondering if anyone can help me out and give me the A B C's of growing indoors...

My Main question is
after starting to grow, how long do i wait untill i change the light periods? whether it be 12/12 or 16/8? give me some suggestions.... thanks guys

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That's a pretty broad question with a lot of variables in figuring out the answer. You should check out the FAQs:
http://www.rollitup.org/view.php?pg=faq

But i'll try to give you some idea.... I like my plants to be about a foot high before switching to 12/12. I like them short and bushy so i throw a lot of light at them. It usually takes about 4-5 weeks for them to reach this height.

BUT -- it depends - if you are growing SoG or SCRoG then you'll throw them into flower right away. Or if you don't have a lot of room for vertical growth you'll also want to flower them before they get too large.

So you see it really depends on a number of things - there is no "right" or pat answer.

Here is a pic of some plants that are just about ready (for me) to put on 12/12... 33 days old... note the 12" ruler sticking in there.

Attached Images

33D-ruler2.jpg (57.4 KB, 37 views)

and welcome to the site, bus driver!

ok... so i determine when i want my plants to go into flowering around a foot is good???
untill then do i keep light on 24/7?

Yes - since you control the light cycle - unless the plant is auto-flowering (chances are it isn't) then when you switch to 12/12 that starts the flowering cycle. The idea is the plant should be big enough to support large buds but not so big that it outgrows the space it is in. Keep in mind a plant can double or even triple in size AFTER switching to 12/12.

alright thanks..... is aluminum foil bad? or is it ok..... reason being we hung foil in the 4x6 room.... should i take it out???

yes take it out. too many hot spots and light shoots everywhere. Replace with a white film paper that is found at your local grow shop.

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Burning ring o fire !!!

Thanks cash.... one final ? about how long will i be able to determine the sex?

again, it depends (noticing a theme here?). I've already had to wait a month into flowering before plants have shown sex.