Conditioning of aquarium water

A water replenishment system that prepares a volume of water from a domestic water supply and delivers the volume of water to an aquarium, the system comprises:

• a container;
• a water replenishment apparatus comprising:
• a first domestic water inlet that is configured to receive domestic water from a domestic water supply and is configured to transfer the domestic water to the container separate from an aquarium, the first domestic water inlet comprising a water condition sensor that senses a condition of the domestic water flowing through the first domestic water inlet;
• a water re-circulator comprising:
• a re-circulating flow path that has a second inlet positioned to receive container water from within the container;
• an outlet that delivers the container water back to the container;
• a water pump that pumps the container water through the re-circulating flow path;
• a conditioner that changes a condition of the container water flowing through the re-circulating flow path so as to provide conditioned water;
• and
• a water delivery system that is configured to extract the conditioned water from the container and is configured to pump the conditioned water extracted from the container into a transfer line for delivery into an aquarium;
• and
• a transfer line that is configured to connect with the water delivery system for transferring some or all of the conditioned water into an aquarium.