Otaki Hydroponics manufacture Hydroponic nutrient for all growing systems.  The main nutrients available are

Mr Grow liquid nutrient in 1L, 5L, and 20L sizes for initial growing phase of the plant to produce strong healthy leaves and roots.

Mr Bloom liquid nutrient in 1L, 5L, and 20L sizes for the flowering and fruiting stages of the plant growth.

Autopot Nutrient in 1L, 5L, and 20L sizes for general plant growth. Ideal for those new to hydroponics.

Dry mixes are available for General, Growth and Bloom stages of growth and come in 1Kg, 5kg and 20Kg (4x5Kg) packages.  Click for instructions on mixing 1Kg and 5Kg