What is this algae on my frag plugs?

[brycenelson]

Hey have had these frags for 1 month now and they have brown this see through algae. Does anyone know how to get rid of it?

salinity 1.025
Ph 8.1
Alk 10
Phosphate .06
Nitrate 5
Calcium 440
Magnesium 1350

 

[Dan_P]

Difficult to see in blue light

 

[I never finish anythi]

Could be diatoms

 

[I never finish anythi]

How old is the tank

 

[brycenelson]

How old is the tank

6 months

 

[brycenelson]

Difficult to see in blue light

That’s in white light my phone camera is just bad