Most hydroponic nutrients come either as a two-part mix that you combine yourself or as an all-in-one product. Both can work well if you follow the label.
Two-part nutrients
Two-part products let you adjust the balance, but they must be added in the right order and kept apart in concentrate. Follow the mixing instructions closely.
All-in-one nutrients
All-in-one products are simpler to use. They suit beginners, but they give less control over the mix.
Avoid overfeeding
More nutrient does not mean faster growth. Too much can burn roots and leaves. Start at the strength on the label and adjust only if the plants need it.