AquaForest Marine Bio Sand 7.5kg

Premium substrate engineered to jumpstart your marine aquarium's nitrogen cycle. This natural white sand contains laboratory-isolated nitrifying bacteria and specialized nutrients that establish a stable biological foundation in days rather than weeks. With a fine 0.5–1.5 mm grain size and balanced calcium carbonate content, AF Bio Sand stabilizes water chemistry while eliminating harmful compounds faster than conventional substrates. Ideal for new setups or as a supplement in established tanks. Simple preparation: mix included bacterial cultures with saltwater, combine with sand, and allow 24 hours maturation before gradual introduction to your aquarium.