Salt Water aquarium 45cm cube with sump.
Marine salt water reef tank. Easiest tank I have ever run. I have not done a water change on this tank since owning it - just fresh water top ups a couple times a week from evaporation and cleaning algae off the glass. 45cm cube tank. Under cupboard sump filter/tank. 2 x anemome soft coral at least - but maybe 3. Heaps of other soft corals. Heaps of snails. Bangai cardinal, clown, blue chromis. refractometer. Big box of salt. Light. You could have the easiest run reef tank setup in your house!