Can't graph below 1h when using InfluxDB source

So I’m using Grafana to create aggregate dashboards of all my Kubernetes clusters, pulling data from an InfluxDB data source.

When my dashboard time range is set to anything greater than last 1 hour, the graphs display fine. If it’s set <1h, then I get no lines showing. However there is data as I can hover my mouse over the graph and it shows values for all the points on the graph.

Any ideas?

Sigh - realized what it was as soon as I submitted it. I have Null value set to Null, which will never connect the lines. Had to set it to connected.