Green slime on acropora

[Aaron1222]

This slime started showing up last week, started out kinda brown colored, then turned more green this week, any idea what it is? Its not growing anywhere else in the tank, Parameters are as follows.

Alk: 11.5dKh
Cal: 465
Mag: 1390
Nitrate: 2ppm
Phosphate.02ppm
Salinity: 1.025

 

[Smite]

It's the beginning of some type of algae. It's growing there because that area of the acropora is dead. My guess is it's going to turn into GHA, or maybe it's a green cyanobacteria? Do you have adequate flow there?

 

[tehmadreefer]

Green cyano most likely

 

[Ultra Aquatics]

Yep that acro is dying, the algae is growing on the dead skeleton. Judging by your rock I’m assuming the tank is very new and may not be ready for acropora.

 

[Aaron1222]

It's the beginning of some type of algae. It's growing there because that area of the acropora is dead. My guess is it's going to turn into GHA, or maybe it's a green cyanobacteria? Do you have adequate flow there?

Yes i have 2 Reefwave 45’s at 50% currently

 

[Aaron1222]

Yep that acro is dying, the algae is growing on the dead skeleton. Judging by your rock I’m assuming the tank is very new and may not be ready for acropora.

I guess thats also very likely, i just did a tank swap from my 90gal to a reefer 900, i used my matured rock from the old tank, but also added new rock.

 

[Smite]

Yes i have 2 Reefwave 45’s at 50% currently

It's always hard to reference flow. I base flow off whether or not all polyps have motion near 100% of the time for sps. I'm sps dominant on a 48x24x16" peninsula style tank. I run 2 mp40s @ 80% on 2 minute alternating pulse. I landed there by watching polyp motion throughout the entire tank. Hope that helps to visually tell you if you have adequate flow.

 

[Ultra Aquatics]

I guess thats also very likely, i just did a tank swap from my 90gal to a reefer 900, i used my matured rock from the old tank, but also added new rock.

Do you always keep alk that high? It’s pretty high for the level of nutrients you have.

 

[Hincapiej4]

0 extension, color is all sad, new rock in a new bigger tank...that thing is dying.

 

[Hincapiej4]

Jesus 11+ dkh lolol

 

[Aaron1222]

Do you always keep alk that high? It’s pretty high for the level of nutrients you have.

Yeah i do, i run off the red sea my recipe calculator and ive never had issues with it

 

[Hincapiej4]

Yeah i do, i run off the red sea my recipe calculator and ive never had issues with it

I'd say you're having issues with it.