Marijuana growing questions.(help!!)

Hey guys! I have a couple questions about growing. I am new to this forum so if im doing somthing wrong someobe tell me lol. I am not new to smoking canabis. But im new to growing it. And ive made myself a little grow box(cardboard kinda janky but works) and it has complete air flow 4 grow lights reflective material all along the walls. And two fans. My questions are about how to get my marijuana to grow good and not super big. Ive seen some plants where their are no fan leaes on them it just kinda looks like a fat nug is growing from the soil. Do the trim it and put it back in the ground?(im growing for personal use) and i just have so many qustions!! And i cant get a clear answer online. Can i just use water to grow? How many times a day do i have to water it. And ive heard about lighting? 18 hours of light then 4 hours of dark or somthing? Can i get away with keepin light on it 24/7? Thanks guys!

when the plant goes into flower it starts focusing all of its nutrients on the buds so by the time the flowering process is over( or close to over) the fan leaves yellow and die. My point being that you can't really induce such actions they just happen. leave your plant to grow naturally with the exception of lollipoping and trimming of course.

Post some pics! that i would like to see your grow box if possible.

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your best bet on water is to buy some distilled water at any store. but tap water could work depending on its ph. nutrients aren't a necessity but are strongly recommended! and for lighting; you can get away with 24/7 but it depends on how far into the grow you are. how old are your plants? because as they get older you will want them to have a steady light schedule although in vegetative growth a strict light plan isn't needed but recommend but flowering needs a strict 12/12 light plan.

hoped this helped man. i could help further if u gave me some info on your setup!

its time for you to sit back and start google every thing and read . I have been reading things for 16 plus years about these plants.. and im still learn new things to try from time to time .

http://www.kindgreenbuds.com/cannabis-grow-bible/,,,, READ<< READ... read,,, read,,, read,, then read some more.. it is an art