Tropica Aquarium Soil is a complete, active, dark brown substrate in the form of small granules 1-2 mm in size. Tropica Aquarium Soil is used without substrate or other additional products as ground for a new aquarium setup.Tropica Aquarium Soil+ improves the aquatic environment in the aquarium+ promotes plant growth+ creates optimal conditions for fish, shrimps and plants+ grain size 1-2 mm+ very appealing optics+ complete active substrate, which is used without other substrate products+ stimulates red colourings of the plantsApplication Tropica Aquarium SoilTropica Aquarium Soil ensures good and active growth from the beginning, and boosts the red plant shades. It is a complete substrate, which can be used without any other types of bottom layer. The recommended layer thickness in the aquarium is approx. 5-6 cm. Tropica Aquarium Soil is further an active bottom layer that lowers the pH value and slightly affects the water chemistry. It is recommended to change 25-50% of the water min