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Saltwater

A little piece of the ocean.

Marine fish, living coral, live rock and extraordinary ecosystems — the most spectacular world you can keep at home.

Saltwater aquarium types

Fish Only (FO)

Fish Only (FO)

Marine fish, pure and simple.

Marine fish without live coral — a focused marine display where fish are the whole story. The most approachable entry into saltwater.

  • Marine fish only, no coral
  • Simplest saltwater format
  • Bold species like tangs and triggers
Fish Only With Live Rock (FOWL)

Fish Only With Live Rock (FOWL)

Nature as the filter.

Marine fish with live rock that contributes to biological filtration and creates a natural environment of caves, ledges and hiding places.

  • Live rock as bio-filtration
  • Natural caves and structure
  • More stable water quality
Reef Tank

Reef Tank

A complex, living ecosystem.

The pinnacle of the hobby: coral, marine fish, invertebrates and specialised equipment — a complex ecosystem glowing with life.

  • Living coral colonies
  • Fish + inverts + coral
  • Specialised lighting and flow

The Rhythm

What it takes to keep a saltwater world alive

Marine keeping rewards consistency. Daily top-offs replace evaporation, and every two weeks a modest water change removes accumulating nutrients. For reef systems, monthly chemistry checks keep coral thriving.

Temperature 75–78°FSalinity Specific gravity 1.024–1.026Water change 10–15% every two weeks
Full Saltwater care guide

Daily

  • Top off evaporated water
  • Check temperature
  • Check equipment

Every two weeks

  • Perform a 10–15% water change
  • Check salinity
  • Test ammonia, nitrite and nitrate

Monthly

  • Monitor reef chemistry
  • Maintain mechanical filtration
  • Replace carbon media where applicable