algae cover up coral

[milk]

Hi there,

Recently i was away from my tank for a week, when i came back home i saw most of my tank were cover up by the brown diatom on my glass, and hair algae on my LR, some of my button get cover up by algae and my finger leather as well.
My question is, how can i eliminate those algae from my coral?

thanks

 

[Kingumar]

how old is the tank?

 

[milk]

2 months old. at the first month, my tank already bloom up all the unwanted algae and it get off after 1.2 months . but now it bloom up back, my finger leather get cover some of it and doesnt want to thrive