New 90g tank

[Jme 1975]

Im starting a 90g reef tank.Im running a fx4 and a home made refuge to home copepods.Just looking for any suggestions besides get a sump.I also have a 20g on a canister thats doing good

 

[Jme 1975]

90g

 

[Jme 1975]

20g

 

[Jme 1975]

Does anyone know what the black looking algea is.

 

[Jme 1975]

Hello still looking for anyone who nows what this blackish color algea is or is it something else