seedlings 1st grow

Hey guys hows it going.. So this is my first grow, i recently got my medical card so i am super stoked. so i have done a grow before but it was a closet grow and very discret. i pulled 4oz with the perfect sun 120 led watts.it was a 2x2x4 tent so not alot of head room. i grew 3 bag seeds. 2...

I av my autofrm lush in 18l pots there under a 600w mg bulb in 4x4 tent I just wondering how far should I keep from my seedlings der only 3 days old and 1 r 2 are starting to stretch a little bit and also like to be do I need intake fan on so early in stage and tips would be great