How do I beat brown algae

[Mindi]

60g cube, only 3 months old, confident of water numbers from reasonably matching Salifert and RedSea tests, T=26.5 S=35, pH=8.1-8.2,Ca=440,Alk=9.8,Mg=1400,( Salifert 1300) NO3=0, (I know that is not ideal) PO4 = 0.04 ( Salifert 0) dosing is 20ml daily Randy's recipe 1 of Ca and Alk, 1ml Vodka, 0.5ml Seachem Reef Plus trace. Substrate is crushed marble (looked awesome until the brown algae got it) ....my one small Blue Tang is valiantly trying to eat all the algae but he can only do so much. I did take a few pics but embarassed to say havent managed to post them..?

 

[blaxsun]

What does your cleanup crew consist of? Yeah, 0 nitrates will be causing issues.

 

[vetteguy53081]

Caused by silicates or even over feeding. Causes also are addition of new rock or sand and often expired Di resin in need of change
A
Simply siphon and reduce white light intensity
Cleaners to help would be:
Astrea snails
Cerith snails
Nerite snails
Nassarius snails

 

[monkeyCmonkeyDo]

...wait. 3 months is nothing in the world or sw fish tanks and maturity goes.
U can Google img pictures of line and bar graphs people have done of cycling over a 90day period course and its all over the place....still needs settling.
D

 

[Mindi]

thanks those helpful replies