nutes for my flowering plants

Hi There,

I am using nutes that are 19-31-17 for my flowering plants. Is this okay and how much should I use? The directions on the bottle say I should use a 1/4 teaspoon per gallon of water. This sounds like a very little amount, especially since I am reading that I should be using 1/2 of what the directions say. Any help would be greatly appreciated.
 
Top