1. Q: If I buy this system with two filters, can I use it with only one?
A: Yes, you can use just one filter in the Nomad. It has two holes for filter placement and we include plugs with your system to plug any unused holes.
2. Q: How can I tell if it is full inside?
A: To determine how full your system is, you will need to lift the upper container and look into the lower canister. You can also purchase a sight glass spigot, which uses a sight glass to show how much water is left in the lower container.