House & Garden Aqua Flakes A&B Nutrient. The complete base nutrient for Quantigo, Mapito, Rockwool, Hydroton expanded clay, Silica Rocks, Hydromite, and Coco bark is especially suited for circulation systems. With smart addition and composition of these nutrients, the nutrient water stays fresh and pure. At the same time, the excellently balanced nutrients ensure an optimal nutrient absorption by the plant. H&G Aqua Flakes A&B Base Nutrient is composed of liquid main and trace elements and contains no bulking agents like solid fertilizers. Aqua Flakes A&B is composed of the purest high-quality nutrients that are available on the market, including Eddha-Fe (Iron). This way, you enable the plant to absorb the nutrients fast and effectively. So, in short, if you want the best for your plants, House & Garden Aqua Flakes A&B is an excellent solution and a great basis for a successful harvest.