Thanks for the replies!

@italieono i live on the 13th floor (penthouse baby!) of an appartment building, i keep all my windows and doors open, and let me tell you there are a lot of them, my whole house is serously a wind tunnle so i did without the fan for now, caus im low on money. by the time they are flowering ill have them in their own grow cab, with 400W HPS/MH system.

@weezer I really don't think the big girl needs any transplant, infact i just transplanted her to that new pot, the prevous pots we're the same size as the ones the seedlings are in(not the cups) Though i agree i need to transplant the ones in the cups.

I am thinking about changing my water, but why is the bigger plant doing fine? she does have some damage to her leaves but that was from when i didnt water her for a week and she drooped. Wish i could get the calmag.... is there another alternative like epson salt?

thanks all