Optimum Grow is designed to supply the needs of your plant during the vegetative stage of their growth cycle. With high levels of nitrogen, present in the nitrate form, GT Optimum Grow will encourage rapid leaf and shoot development helping to maximise growth rates and the flower and fruit potential of your plants in the later phases of their development. GT Optimum Grow is suitable for use with all hydroponic systems, using any of the range of inert growing media, including rockwool, perlite, clay and coco peat, in both recirculating and run-to-waste configurations.