ALGAE HELP PLEASE

[Mrsflip]

Can anybody help. New to here and tank around 9 months old. Had an algae outbreak. Not the best pics but starting to stand up with air bubbles on the tips. More brown/orange under whites. Goes away over night nearly completely and then back when lights on. Running 5 hours blue and 2 hours white.

No microscope to confirm but thinking dinos.

Nitrates 4
Phosphate 0.15
Salinity 1 026
Temp 25.6
Ph 8.1

Running carbon, skimmer and floss in sump.
Red sea led50
Ro from lfs (tds 0)

 

[reefpunk707]

Looks like diatoms

 

[ScottB]

Search here for the "coffee filter dino test".

At least you will know whether or not it is dinos. Then you can decide whether or not to invest $50 on a student microscope.