HELP with nutes I found in my garage

I dont know much about nutrients or what the 3 numbers even mean, but i found some rose plus nutrients 19-24-24 in my garage that my parents used at one time. Would this stuff at all help my aerogarden grow? Keep in mind that all im using right now are the regular aerogarden nutrients. I am currently Flowering!

Thanks ppl this site is a life saver...

The numbers mean this: 19-24-24. It lets you know the percentage of nutrients it is using. Since the 3 main nutrients are NPK that would be your mix. The mix you are using is a good mix at this point for your flowering stage. Good luck post pics please.

Nitrogen (N), Phosphorus (P), and Potassium (K)

Sweet thanks, Does it matter that this powder is for soil and i have a hydro system?

Doesnt matter does the same thing. Nutrients are better in the powder form then the liquid form.