HIRO Aquatics Naturoil Aquarium Substrate, Sand, Soil For Freshwater Planted Aquariums, Black Aquarium Sand

[Size] 8L / Bag, 13lbs each.[Natural Organic Fertility Guarantee] This black aquarium substrate is made from subtropical pure natural organic soil, it contains more than 30% natural organic matter, not only providing enough micronutrients for plants, but also avoiding fishes and shrimps getting damage from the artificial fertilizer.[Roots Faster] High percentage of potassium in the formula allows aquatic plants toroot faster. The thickening of plant cell walls promotes plant growth and avoids plants yellowing, rotting and other common diseases. Perfect for Freshwater Planted Aquariums.[Soften your water without clotting and rotting] It can absorb calcium and magnesium ions in water, so as to soften the water quality, promoting the growth of your plants.[Benefit for Good Bacteria] Its light, non-compacting, porous structure is also highly beneficial to nitrifying bacteria, which rapidly colonize the vast porous surface, providing optimal water quality for plants and avoiding clotting an