Red algae problem

[jaliu13]

My tank is growing a ton of red algae in the sand my rock and my live rock I've done a water change and added some new sand is there anything more I can do ?

 

[saltyfilmfolks]

My tank is growing a ton of red algae in the sand my rock and my live rock I've done a water change and added some new sand is there anything more I can do ?

Hi Welcome to Reef2Reef!!
what are you parameters like, The No and Po. Nutrients can play a large role in cyano bacteria?
How old it the tank?