If you intend to measure out large amounts of liquid, you will need to use a Measuring Cup or Measuring Jug, as a syringe may take far too long.
These Measuring Cups and Measuring Jugs are perfect for mixing liquids in large amounts as they are clearly marked in millilitres so you can see exactly how much the cup or jug contains, to ensure you are providing the correct dose of nutrients or additives into your solution.