Algae or diatoms

[Jaydontlag_]

What?s up reefers?! So my tank is on its 5th week of cycling and today I noticed some brownish greenish spotting all over my rock work. I don?t know if this is algae or if it?s diatoms since I?ve been leaving my lights running during the day. I?ve attached some photos if anyone can identify what it is. Thanks in advance

 

[Spartanwarrior]

pretty bad pics my dude. try taking that with lights off and natural light