Gravel/Substrate Aquarium

Aquarium substrate forms the base of the layout and should be selected according to the aquarium type, plants and animals. The range includes decorative sand and gravel, nutrient layers for planted aquariums, active soils for aquascaping and shrimp tanks, porous mineral substrates and specialised materials for marine aquariums.

Inert sand and gravel mainly provide a decorative and functional base without deliberately changing water parameters. Nutrient substrates are normally placed beneath a covering layer, while active soils can influence hardness and pH depending on the product. Marine substrates may consist of aragonite or other materials intended for saltwater systems.

Compare grain size, colour, material, required layer depth and influence on water chemistry. Fine substrate can be suitable for bottom-dwelling fish, while planted layouts may require additional nutrient storage or root fertilisation. Product pages provide pack size, grain size, intended application and information about preparation before use.