Aquarium Gravel, Sand, Aquasoil & Planted Tank Substrates

Explore aquarium gravel, sand, aquasoil and planted-tank substrates at The Tech Den Australia. Compare colours, textures, grain sizes and pack sizes for freshwater aquascapes, shrimp tanks, marine aquariums and African cichlid setups.

Explore substrate types

Gravel and decorative sands: Browse natural river gravel, quartz sands, coloured gravels and mixed riverbed materials from Aqua Natural, Aqua One, Bioscape, Marina, JBL and WIO.
Planted-tank soils and substrates: Compare ADA Amazonia II, Mastersoil, Fluval Stratum, Aquario Neo, Nisso and Dymax soils, alongside Seachem Flourite and Carib Sea Eco-Complete planted substrates. Check each product's nutrient content, preparation and water-chemistry effects.
Shrimp substrates: Explore dedicated shrimp soils and sands in different grain grades. Select according to your shrimp species and desired water parameters, not colour alone.
Marine and cichlid materials: Browse aragonite, coral sand, coral rubble, marine grit and reef substrates from Carib Sea, Aqua Natural, Serenity, Bioscape, Aquaforest and Red Sea. These differ from substrates intended for soft-water planted tanks.
Bacteria-containing substrates: Selected Aqua Natural Bio-Substrate and Carib Sea Arag-Alive products contain bacteria. Follow their specific storage and setup instructions rather than treating them like ordinary dry gravel.

Choose for your livestock, plants and water

Compare grain size, intended application and the amount needed for your tank footprint and planned substrate depth. Check whether the material affects pH or hardness, supplies nutrients, or needs an additional base layer. Aquasoil, mineral-rich clay gravel, quartz sand and coral-based materials are not interchangeable.

Follow the product's rinsing and filling directions; soils and bacteria-containing products may require different preparation from dry gravel. Check setup and cycling requirements before adding livestock rather than assuming a new substrate makes an aquarium immediately ready.

Other materials and purchasing details

This collection also includes reef aquascaping rock, selected turtle and reptile substrates, wetland sets, refugium material and moss matting. Check the stated use for these items instead of assuming every product is suitable for a fully submerged aquarium.

Many larger substrate bags and rock boxes attract additional delivery charges. Selected reef rock sold by weight or piece, and the Java Reef Rock Nano Rock Pack, are listed for in-store pickup only. Check pack sizes, selling units and individual purchasing conditions before ordering.