Need help with thisalgea

[Rafaelpadro24]

Went on vacation for 11 day and had someone attending my tank only feeding, topping water with rodi water and emptying the protein skimmer and I noticed in some areas of the rock new algea growing. I introduced 2 pin cushion sea urchins and 1 tuxedo sea urchin. I there anything else I can do to help reducing or eliminate this. Picture included on the algea I'm having issue with.

 

[Uncle99]

I might check water chemistry parameters especially nitrate and phosphate which feeds that stuff.

Seems quite fast for 11 days.