Hey Chris what fish do you have in your cube tank now?

A nice wrasse would be a good addition... they are active and nice eye candy.

Danny, I have a bunch of fish
5 lyre tail anthias
3 Bartlett anthias
Bi colour anthias
Sunburst anthias
Yellow tang
Hippo tang
Long nose hawk
Striped hawk
Cardinal
Sulawesi basslet
Yellow watchmen
Green coral goby
3 clowns
Purple firefish
Tonozukai wrasse
Longfin wrasse
The anthias I had more at one time but they slowly got skinny and disappeared, even with feeding a variety and 5x per day.