Proper nute management means giving your plants everything that they want when they need it. It's simple.
Obviously, using a meter to know your ppm is the best way, but without that, you can go by the label directions, but don't use what they say. Start with 1/4 strength when the plants are small, and increase it to one half strength as they get bigger. Watch your plants, if they get too strong a ppm mix, they will react, usually with curling down leaf tips, or browning tips.
How much nutes they will use depends on the other factors of growth, how much light they are getting, etc. Each factor must supply what the plant needs for everything to work properly.
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