General Hydroponics Armor Si Plant Growth Enhancement, 1-GallonBrand: General Hydroponics Features: Armor Si is suitable for all types of plants during all stages of growth It can be used for plants growing in hydroponics, coco coir and all types of media Use as a growth enhancer with irrigation water or in addition to your regular fertilizers Improves plant structure and foliar development, increases yield and improves flower and fruit production Improves stress resistance, drought tolerance, heat and cold