nutes

I am using miracle grow water controll soil and my plants will be a week old tues when could I start using plant food

Dont use nutes until week 3 of veg at least, they really dont need much and you risk over fertalizing if you arent measuring your ppm levels. you can find 100 posts on this forum of people who have destroyed their garden with miracle grow. its got waaaay more salts then you think, and will burn your plants easily. if you are only vegging for a month i would almost wait until they start flowering

well i use mg moisture control and i don't feed mine for like
three to four weeks with nutes
just straight water!!!