new to this TIPS PLZZ

so i started alil project a few days ago. so far so good. i used a hydroponics set up my lil brothers 6th grade school year just 4 months ago. kinda wierd shit to be teaching 6th graders but hey what the hell. i threw like 25 seeds in it knowing that alot of seeds wouldnt start. iam useing the water from my alligator snapping turttle tank because off all the waste he puts out. but by day 4 i have 21 starts all have broke out of seed shell and has those first 4 lil leafs things on them and are atleast 1 and ahalf to 3 inchs. im not to sure but i think the turttle water is helping hardcore. i can use any tips you give me like the best ways to tell male from female. you know the key thing i need to do this right....


p.s the reason i put so many seeds in one thing was cuz im tierd of hearing people be like ya i got couple plant i wanna be like ya well fuck yo weed plants i got a weed bush

The first thing you need to do is read all the sticky's under the basic growing and also hydro areas since I take it your growing hydro. http://boards.cannabis.com/basic-gro...-dankness.html
http://boards.cannabis.com/hydroponi...iscussion.html
http://boards.cannabis.com/indoor-li...uch-light.html
start with those 3

A bit more info on what kind of system ? What kind of medium ? What kind and size of light ?

There is no way to tell what is male or female untill they go into flowering.