Brown algae - intervene or not?

[Araona]

Hi all,

Here's a picture of our 4 month old tank at the moment. We have a lot of brown going on and I'm trying to figure out whether it's diatoms or dino and whether I should intervene or accept this is part of the ugly stage and let it be? We have corals in there so don't want them to be affected. Any advice welcome.

We have 0 ammonia, nitrate, undetectable levels of nitrate and phosphate, pH 8.2, 9dKH, lights on for 8 hours a day. In some parts of the rock it blows off the rock like sand but in other parts it's stringy.

 

[blaxsun]

I can't tell if the colors are off or what... but it doesn't look like dinos.

 

[kevgib67]

If you haven’t had diatoms yet then I would say that what you have. The will disappear on their own. Good time to introduce copipods.