Bag Seed

Hi there people. I curently have two plants,both from bag seed and both turned out female,think they been flowering for about 3 weeks now.totally different looking plants.They almost need feeding twice a day.This is ok isn't it? can anyone guess the strains by chance? And if ones indica and the other one is sativa will the flowering times be alot different? PLEASE HELP ME IM A FIRST TIME GROWER

many thanks
MRbud

looking really good but as far as the sativa i have absolutely no clue the only thing i can say about that one is i c some chem burn and the indica looks just like this northen lights x afgan #1 i grew but scince it is bag seed there is no way of telling