brown algae

ok so reduce light, check water quality and address that anything else maybe a little BLEACH!!:-/

 

The thread Inwall included in one of his post addresses the treatment of dino.

There is no quick fix. Had I had that link when I had my battle with dino, I would acted more aggressively initially. Instead I tried, water changes, adding and replacing carbon more frequently (chemipure elite) and aggressive skimming.

Two months into the battle I was ready to just tear down the tank, I was so frustrated and it was beginning to kill my corals.

What worked for me and most of what is found in the link provided by Inwall.

Raise and maintain the pH consistently.
Complete/total black out of 4 days.
Manual removal by using a turkey baster to remove it off the rockwork and siphoning out as much as I could prior to the black out.

I discontinued the water changes during treatment as well. And raised my magnesium level to 1500.

Good news is that if you go this route, it can prove effective in treating other nuisance algae as well.

Research as much as you can. Good luck.

 

That link is awesome, I will have to reread it tonight

 

Would new LED lights cause this problem?

 

It possibly could. If you put on a very bright light and didn't light acclimate the corals giving them light shock, there could have been a partial bleaching event. However, the conditions had to already be favorable for the bloom to spread. I.e. excess phosphorus and nitrates and possibly low flow so the dino's settled Vs blown into the skimmer.