When to use nutes? Foxfarm nutes?

So this is my first grow and my seeds just came out of the ground. I'm using fox farm ocean forest soil and everything is going well. I'm growing autoflowers. When should I start using nutes? And what is the difference between the fox farm nutes (eg tiger bloom big bloom and grow big). What should I use and when should I use it. Thank you!

start with grow. for a few weeks..then go to a mix of grow/big

and during flower use tiger/big bloom and a couple weeks of grow.....

maybe start on the third week er so...start with 1/4 strength nutes work your way up...make sure youre ph'in your water...and your RO/DISTILLED water with that soil and nutes.

also you may run into some calcium problems with those nutes..you might wanna pic up some cal/mag to use with them

Do I only give them nutes every other watering or how often?

you could by a moister meter from you local hardware store, and it would tell you when u need to add water, or just stick ur finger halfway and feel if its dry or wet (moist0, if it feel wet dont and water. or just pic up your pot ad feel if its ligh or heavy, if its ligh add water, its heavy dont add water. when u add water pic it up so u can feel it when its wet than pic it up when u think it need water, so u can get a feel for when it need or not

^hes right about the watering...with FFOF i feed like every third watering. but the strain i had didnt need much nutes.