Green hair algae - 2 spots only

[kozik]

I have green hair algae that literally only grown in 2 spots, I manually pull it (not all, some is too hard to get) and the within a couple weeks it’s back.

I don’t understand why only in these 2 spots though, 1 spot is up high with lots of light but the other spot is lower on a rock close to my sand bed...

Calcium 400ppm
Magnesium 1500ppm
Alkalinity 10.5dkh
Phosphate 0
Nitrate 0

Tested with Red Sea test kits...

Normally with people when they say you have to solve the underlying problem but I’m not sure what my underlying problem is...

 

[Redfoxtang]

Green hair algae will grow just about anywhere. With your nutrients non existent your gonna have more problems than just GHA soon. I would suggest to feed more frozen food to bring up both N03 and P04. Do you have any coral? How many fish? What size tank?

 

[kozik]

IM Nuvo 20
2 clowns

Mixed reef:
Hammers
Torches
Blasto
Scoly
Trashy
Acans
Zoe’s
Montipora
Digi
Acro

Little bit of everything and mostly healthy, acro have had slow growth probably because of nutrients admittedly.

 

[Redfoxtang]

I would hand remove as much algae as possible and up your CUC a little bit more and also feed a little to bring your nutrients detectable. Definitely wouldn’t want you to run into a dino probably!

 

[ScottB]

First I would make sure it is just GHA and not bryopsis. Get a sample under a magnifying glass if you have not already.

Assuming just GHA you can try a couple things. Best if you can pull the rock from the tank. Hit it with some H2O2 and let it bubble out of the water for 5 minutes. Some folks say boiling hot RODI will also kill it.

If you have to do it "in tank", then turn off the pumps and shoot it with the same from a turkey baster. You will have to repeat every couple of days.

And yes, raise nutrients to avoid dinos and feed corals.

Good luck and have fun!

 

[Brian barranco]

Watch out . Remember that by manually removing it would cause spores to be release and it will spread all over . I would get a uv sterilizer. And I would get Mexican turbo snail or urchin. It would keep it under control.