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SUBSTRATE & HARDSCAPE

Substrate & Hardscape

Substrate is the only part of an aquascape that is effectively permanent — changing it means tearing the tank down. It also has a chemical role: aqua soils buffer pH and release ammonia at first, while inert sand and gravel do neither. Hardscape carries the composition, and some stones raise hardness measurably.

Unplug before servicingHands out of the water firstDrip loop on every cableTest before you dose30 ppm CO₂ ceilingCycle before stocking

SubstrateSetup

Aqua Soil

Sintered clay granules that buffer pH down and release ammonia for the first weeks.

Setup stage
SubstrateSetup

Sand Substrate

Inert, rounded-grain sand — chemically neutral, but it compacts and needs root feeding.

Setup stage
SubstrateSetup

Driftwood

Bogwood and branch wood that leach tannins, lower pH and anchor epiphyte plants.

Setup stage
SubstrateSetup

Dragon Stone

Deeply textured, near-inert stone with dramatic crevices that host moss and shrimp.

Setup stage
SubstrateSetup

Seiryu Stone

Angular grey-blue stone with white veining — the classic Iwagumi choice, but it hardens water.

Setup stage
Also in the catalogue

Other categories

Tanks & Filtration

The glass, the water volume and the machinery that moves it. Filtration choice sets the ceiling on how heavily a tank can be stocked and how forgiving it will be when something goes wrong.

6 tools

Lighting & CO₂

Light is the accelerator pedal and CO₂ is the fuel. Get them out of balance and you grow algae instead of plants — the single most common failure in a planted tank.

6 tools

Aquatic Plants & Livestock

The organisms themselves — their light and CO₂ demand, growth rate, adult size and temperament, and who can live with whom.

6 tools

Water Testing & Maintenance

The instruments that tell you what the water is doing, and the routine that keeps it that way. Most aquarium disasters are invisible until something is measured.

5 tools