What's this brown slimy algae?

[Reef_At_Camp]

We have a pretty new tank (3 months old) and lately have been battling GHA in the display. Today we noticed this different algae growing hit the sump. It doesn’t seem like the same GHA we are battling up above- this new one is brown and slimy (see pic below). So far we only see it in the sump, but want to try to identify and stop it before it spreads to the display too. Can someone help us identify it?

 

[vetteguy53081]

We have a pretty new tank (3 months old) and lately have been battling GHA in the display. Today we noticed this different algae growing hit the sump. It doesn’t seem like the same GHA we are battling up above- this new one is brown and slimy (see pic below). So far we only see it in the sump, but want to try to identify and stop it before it spreads to the display too. Can someone help us identify it?

Looks like the start of dinoflagellates often triggered by keeping the tank too clean bearing low nitrate levels
Blow this stuff loose with a turkey baster and see if it returns tomorrow confirming Dino
If so, Prepare by starting with a water change and blow this stuff loose with a turkey baster and siphon up loose particles. Turn lights off (at least white and run blue at 10-15% IF you have light dependant corals) for 5 days and at night dose 1ml of 3% hydrogen peroxide per 10 gallons for all 5 nights. If you dont have light dependent coral- turn all lights off. During the day dose 1ml of liquid bacteria (such as micro bacter 7 or XLM) per 10 gallons. Clean filters daily and DO NOT FEED CORAL FOODS OR ADD NOPOX

 

[Reef_At_Camp]

Do dinos have a sort of filamentous structure? This is somewhat stringy where it stretches between peaks on the rock. We battled dinos in the display tank a few weeks ago, and they looked more like an allover brown coloring and produced tons of bubbles.

 

[Reef_At_Camp]

Looks like the start of dinoflagellates often triggered by keeping the tank too clean bearing low nitrate levels
Blow this stuff loose with a turkey baster and see if it returns tomorrow confirming Dino
If so, Prepare by starting with a water change and blow this stuff loose with a turkey baster and siphon up loose particles. Turn lights off (at least white and run blue at 10-15% IF you have light dependant corals) for 5 days and at night dose 1ml of 3% hydrogen peroxide per 10 gallons for all 5 nights. If you dont have light dependent coral- turn all lights off. During the day dose 1ml of liquid bacteria (such as micro bacter 7 or XLM) per 10 gallons. Clean filters daily and DO NOT FEED CORAL FOODS OR ADD NOPOX

In some lights, it is looking purplish too. Could it be cyano?

 

[Gtinnel]

Brown and slimy is a pretty good description of dinos, although you are right that it usually has bubble trapped in it.
I agree that it looks like dinos to me also.

 

[vetteguy53081]

In some lights, it is looking purplish too. Could it be cyano?

Cyano generally pink, yellow, purple and brown
Dino brown, gold and orange in many cases but the snot looking effect is most distinct