Agreed tops. But also you wanna wait till the 5th or 6th internode (spaces between the leaves or the set of leaves) the plant is ready to develops its sex. What I like to do is once im at the 6th set of leaves I put them under 12/12 until the sex shows. The easiest way to skip this process is to buy feminized seeds or clones. But I hope this helps. Best of luck!