JBL Sansibar RIVER is a light, fine substrate with black pebbles for freshwater and marine aquariums with an approximate grain size of 0.8 mm. Prevents injuries of the mucous membrane: coarse-grained, round-shaped natural sand is gentle on sensitive barbels. Ideal for digging fish, such as rays, kuhli loarch, catfish, etc. Ideal for fish, invertebrates and plants: no unwanted pollutants released into the water. Well suited for undergravel heater cables.
To Use: Rinse the substrate with tap water to remove any abrasion caused in transit. Put substrate on the nutrient substrate (JBL AquaBasis) to promote the plant growth (for vigorous growth about 6-8 cm).
Calculation formula: The right amount of substrate: length (cm) x width (cm) : 140 = kg substrate with 5 cm thickness.