I would like to help you but give us a bit more information.
And this lack of information makes me guess that you are really totally new to indoor growing, aren't you ?
Make an effort, learn by yourself for the hardware, the ventilation, the climate needed for the different phases etc..
Everything is very wll explained in the video "K2 grow video" on Youtube.
Basically you need constant fresh air supply to your plants, and that's why you will need to make a few modifications in the room in where you have your closet.
Other than that, I can give you feeding explanations
You run them in soil I suppose ?
If yes, get your hands on
-25g of Pirhana (25e)
-Voodoo Juice (20e)
-Sugar cane molasses (3e)
-an air stone bubbler
-a trash bin of about 30-50L
-Bio Grow (15e)
-Bio Bloom (15e)
Mix 2g of Pirhana in each of your soil pot.
Fill your reservoir with water, put the bubbler in it, add 2g of Pirhana, a few mL of sugar cane molasses, a few mL of Voodoo Juice, let the whole thing bubble for 3 days and water with that. Do it until the harvest, flush time included.
Depending on whether you bought a light fed soil 1) or a richer soil 2), you will need to add low doses of Bio Grow and Bio Bloom to the solution
2) After 3 weeks of vegetation and 3 weeks of 12/12 at a ratio of 1 part BG / 3 part BB
1) After 3 weeks of vegetation with BG-only during the 3 first weeks of 12/12 then same ratio as 2)
Start with that, plus a good climate and a constant fresh air supply and you will have an excellent end product, guaranteed
