TetraPlant Complete Substrate is a ready-made ground material with an effective long-term fertiliser. -for luscious, healthy growth of plants and reduced water contamination-consists of a high-quality mixture of sand with a naturally high iron and micro-nutrient content as well as natural black peat with useful humic substances-the grain size of the sand enables the quick ingraining of plant roots and an optimum use of the nutrients-guaranteed free of nitrates and phosphates, in order to prevent the unattractive growth of algae-aquatic plants grow quickly, preventing the growth of algae during the critical setting-up phase for all freshwater aquaria