Can a node only mine one algo at a time?

I have a single node running, wallet is listening:

grin-miner is configured for 31 on one card, 29 on the other. They are both configured in the same grin-server.toml and both cards show that they’re mining and Status:ok in a single instance of grin-miner.

grin server though, on the mining tab, only shows Cuckoo Size: 31

Is this just a UI limitation that grin is not showing both algos, or can the node/wallet only mine on one algo at a time? Should I be running two separate instances of grin-miner in order to mine both algos?