I will always recommend a few Chromis for any tank, They are very active swimmers. I will also recommend QT'ing them as they are a notorious for Uronema. I would either buy them from
@tsmaquatics or QT them yourself. I would go with 3 in your tank. Chromis are Damsel fish, aka aggression, thus the rule of 3. Any aggression will not be 1x1, it will be 1x1x1, thus spreading any aggression until they figure out a pecking order.
I will always recommend
@AlgaeBarn. That's why I have a 6 week subscription with them.
I will also recommend getting some Phytoplankton as well. It will help the pods you just added to feed. It will also feed any filter feeders in your tank.