thanx man yeah my 2 older ones are like 8 weeks old so its time they showed there sex so maybe i do have girls so fro mwhat busy said i take it they they will show sex and then when the light gets right they will start to flower or do they start to flower like right after they show sex oh and im using that 8-8-8 stuff so you should be fine using that MG stuff jsut dont over feed them