Any idea what type of Algae this is growing on my rocks and sand bed?

[pridez]

Hey guys fairly new to the game and I noticed my rocks and sand bed are getting this red shade of algae growing on it. It also goes in the walls of the aquarium and I clean it off with my flipper but not sure if I should be concerned? Any recommendations on what to do to fix it? Water parameters are all good except my nitrites are a little high, I’m micro dosing a cap of bacteria every couple days to try to bring it down. I’ve attached some pics below. Thank you in advance.

 

[Dbichler]

Too blue to tell

 

[Davos2911]

Looks like diatoms has your tank just cycled? Make sure you are using phosguard and get a load of trochas snails they clran it up quite nicely