What should I feed My plants in soil?

I heard Jack classic was a good nutrients for soil. Idk what to use without killing my plant's. I'm growing a dinafem white widow, she's about 2 weeks an two bubble gum auto's that are a week old . In miracle grow soil an never giving anything but water from the tap. I want to get all the nuterints bc I've seen videos of guys having like 12 different kinds of nutrients , just wondering if there all nutrients an not something else?

You should be careful with what and how much you feed your plants. White widow can handle some mutes as it is an easy and forgiving strain but autos are more sensitive to nutrients and miracle grow has a lot of food in it. It can burn your plants so I would stick with water unless you start to see deficiencies. Let the plants tell you what they need before feeding them. Better safe than sorry.

MG usually has time released frets/nutes anyways so you should be ok on your first grow. The autos should be ok but the we in flowering might need help though I have flowered out plants never using nutes just MG and water

jack classic citrus is your best choice but any jacks near 20-20-20 will do ok. start with 1/4strenght and increase if needed. you dont need anything else.I have already grown in miracle gro and I can say by experience, it's the worst soil u can buy.

as stated above, mg has time release ferts in it so you probably don't need to add anything. If your plants start looking hungry, jacks is pretty good for soil.
If someone is using 12 different nutes, and they're not individual salts, they are an idiot.