How much water is in the Nexus+?

Nexus 220+ Total volume of water 510 litres / 112 UK gallons / 135 US gallons Outer chamber 405 litres / 89 UK gallons / 107 US gallons Inner chamber 105 litres / 23 UK gallons / 28 US gallons Nexus 320+ Total volume of water 840 litres / 185 UK gallons / 222 US gallons Outer chamber 635 litres / 140 UK gallons / 168 US gallons Inner chamber 205 litres / 45 UK gallons / 54 US gallons