Tropical River Soil by DOOA is a substrate for aquariums. It reduces the pH value and creates a slightly acidic environment. This soil is especially interesting due to the beautiful red-brown colour and gives a natural look to the aquarium, as it includes different grain sizes.
As the Tropical River Soil by DOOA is a natural product, it is possible that dry plant parts or gravel is included. Both is not harmful for the organisms of the aquarium and does not influence the quality of the water.