Algae on rocks

[SaltwaterTanks]

Any suggestion on getting algae off rocks ?

 

[Hitman]

Looks like the start of red cyno. Use a soft tube and suck it off.

 

[ether]

I had some of this when my tank was newer, if yours is also you can shorten lighting cycle and wait it out, should go away with proper feeding and CUC.

 

[cracker]

The brown looks like diatom to me .You could go lights out for a while , If no corals yet ,longer. Works for me .