The sump achieves three key functions:
- Water management re: evaporation top up with RO (Reverse Osmosis) water, salt water
replenishment, and temperature control.
- Water treatment re: biological and mechanical filtration, sterilisation via UV, and
the calcium reactor.
- Circulation re the two main high volume pumps that feed the display tank.
The water volume in the sump is c. 140 litres / 30.79 UK Gallons / 36.98 US Gallons
The refugium is illuminated 24 hours a day, with a low wattage fluorescent