• GT Optimum Grow A&B

GT Optimum Grow A&B

GT Optimum Grow A&B is a complete and balanced twin pack nutrient solution that supplies all the nutritional requirements for healthy hydroponic plant growth. Formulated by internationally renowned chemist, Carl Barry and available in ‘Grow’ and ‘Bloom’ formulations, this nutrient has amazing performance levels in all hydroponic systems.

The formulation has been calculated to the highest possible standard of accuracy and is manufactured from the purest and most soluble mineral salts.  The inclusion of chelates ensures vital micronutrients remain available to the plant even during pH fluctuations. Available in 2 distinct formulations, GT OPTIMUM supplies all the nutritional requirements for healthy plant growth.  It is also formulated to supply the needs of the plant during the vegetative stage of its growth cycle.  High levels of nitrate-nitrogen encourage rapid leaf and shoot growth, maximizing the young plant’s potential to produce fruit and flowers later in its life.

GT OPTIMUM BLOOM is dedicated to the flowering and fruiting stage of plant growth.  The bloom formulation contains reduced levels of nitrogen and enhanced levels of phosphorous and potassium, the elements required for the initiation and development of buds and flowers.   Optimum is suitable for all types of hydroponic cultivation and is especially recommended for NFT, Flood and Drain and recirculation systems containing perlite or clay.

Important tips

  • Gradually increase the nutrient strength during each cycle ie, start on 1.5mS during the Vegetative growth stage and gradually increase it to 2.0mS towards the end of the stage
  • DO NOT IGNORE pH. Certain minerals can become inaccessible to the plant when the pH of the solution is outside the recommended range.  If using a pH Test Kit, aim for ‘6’.
  • Both Grow and Bloom have an ‘A’ part and a ‘B’ part and these must be added in equal amounts as per instructions to maintain the ideal nutrient profile for the plant.
  • Re-circulated nutrient tanks should ideally be changed once a week in order to maintain the optimum mineral nutrient profile in the tank.
  • To introduce an organic component to your nutrient solution which will benefit your plants greatly, use GT FULVIC.
  • To maximize the flowering potential of your plant during the flowering stage, use GT SUPER.
  • For a plant with extra strength and vigor, add GT SILICA to your nutrient solution.

Sizes available:  1L, 5.5L & 20L

Size guide


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