Hey guys im working on my first grow right now i have 11 plants all bag seed. Theyve been vegging for about 30 days now and are starting to show signs of sex. Two of them are 100% female ive identified pistil and am sure. But as for the others i see small balls growing on some but my question is how big should i let them get before i know they arnt calyxs? some of them are a decent size (maybe 1/4 cm at the biggest) but i just cant bare cutting them down now and risk making a mistake you know. Thanks for your help.