Aquael Basalt Gravel 2 - 4 mm[Weight - 10kg]

The Basalt substrate from Aquael is a fine and natural substrate that is distributed in the aquarium. The basalt-black gravel creates impressive contrasts in the aquarium due to its dark shade. 
The natural substrate does not contain any artificial additives or coatings, which is why it behaves in a water-neutral way and does not release any polluting substances. The substrate has a very fine grain size of 2 - 4 mm and is also ideal for aquariums with shy fish that prefer a dark substrate for camouflage purposes. 
Natural sands and gravels are available in a wide range of grain sizes and colours. Thoroughly rinsed and free of impurities. They are sold in durable 2-kg or 10-kg plastic bags. Do not affect the parameters of aquarium water (the above does not apply to dolomite gravel, intended for tanks in which fish original to Lakes Malawi and Tanganyika are kept).