$159.00 AUD
$46.95 AUD 
Explore CaribSea aquarium substrates, aquascaping rock and selected marine supplements at The Tech Den. Compare Eco-Complete planted and cichlid substrates, Arag-Alive marine sand, Aragamax dry substrates and LifeRock shapes to suit your aquarium's layout and water requirements.
Eco-Complete Black and Red planted aquarium substrates are listed in 9.1kg packs with 1–6mm grains. The collection also includes separate Eco-Complete Cichlid substrates, including Zach Black gravel and white sand. Cichlid formulas are described as buffering substrates, so check their effect on water chemistry rather than treating them as interchangeable with planted aquarium products.
Browse Arag-Alive options including Fiji Pink, Hawaiian Black, Caribbean, Bahamas Oolite and Special Grade, alongside Aragamax substrate listings. Compare the exact product's grain size, colour, pack weight and preparation instructions. Marine substrates differ in texture and composition, so select a formula suited to your livestock, water chemistry and circulation.
LifeRock listings include base, shelf, branch and Shapes rock, Coral Arch sizes, Coral Tree and Reef Tree kits, and a Dreamscapes aquascaping kit. These products are described as aragonitic rock for marine and reef aquascapes. Check the selected piece or kit's dimensions and plan a stable layout with suitable space for livestock and maintenance. Rock shapes vary, and individual dimensions are not guaranteed for assorted pieces.
Purple Up is listed in 237ml and 473ml bottles as a supplement intended to support coralline algae growth. Follow the manufacturer's dosing and water-testing guidance for your aquarium. The collection also includes Reptilite Natural White substrate, a separate reptile product rather than an aquarium substrate.
Selected loose LifeRock pieces and larger Coral Arch listings are marked for in-store purchase or pickup only. Many substrate bags and boxed rock products specify additional delivery charges calculated at checkout. The 18kg LifeRock Base box listing also notes destination restrictions for Tasmania, Western Australia and the Northern Territory; contact the store before ordering that item for those destinations. Check each product page for its ordering requirements.
