about to flower, need advice on nutrients

I am about to flower my seven clones I have them in a 2'2 width 5'2 length 5'1 height closet. All about 8-10 inches. I need to know what type of nutrients I need for flowering if there home remedys I can make, or the cheapest ones as I am low on cash. I have Humboldt county bat guano which I can make into tea for flowering but that's it.

Any help/ advice would be appreciated.
And I will post pictures of plants soon.

im guessing you want organic if your using bat guano?

Yeah ive been trying to keep it as organic as possible. Ive been using the bat guano adding it to water during veg for a little kick and composts in the soil.

Purkle

Kosher

Lsd