What nute number? 15-5-5? How does she mix it she has like a 1 liter spray bottle, say that was full of water, how much nutes should she add? I'm assuming you add the nutes to the water and let them dissolve?

I'm sorry but she has no clue what she is doing and could really use and really appreciates the help!

Also, should they be sprayed at the beginning of the night cycle since that is when the photosynthesis is taking place?