HELP! - SPS colony dying overnight

[xLimitlessJR]

HELP!

My SPS colony has been in the tank for almost 2 months happy as a clam and all of a sudden I woke up this morning and half of the coral looks bleached. Any ideas?

 

[Ludders]

So many variables in this hobby, could be a contaminant in the water or a swing in chemistry.

Can you tell us a bit more about the setup and recent water testing results.

Anything you could think of which could have contaminated the water?

 

[dadnjesse]

Your tank looks new. Cut the dead piece off.

 

[chrisjj625]

Looks like RTN, not bleaching. Tough to tell from info you provided. cut off a frag to try and save some. Maybe able to still save the colony. Have to fix the issue and let it run its course.

 

[block134]

I would go with something in the water chemistry changed or maybe too high of direct flow on them.

 

[vetteguy53081]

Something obviously changed:
Alk high
Water flow issue
Ph drop
Salinity too high or low
Red bugs or other crawlers

 

[Charlie’s Frags]

Have you made any recent changes?

 

[xLimitlessJR]

The only thing that changed was I pointed a return at them, I didn't think i could kill an acro with too much flow (even if it is direct)

 

[ryshark]

The only thing that changed was I pointed a return at them, I didn't think i could kill an acro with too much flow (even if it is direct)

Constant direct flow can cause that.

 

[block134]

I killed one and almost a second one with to much flow when I didn't notice my power head was set to 100% for a few days

 

[ryshark]

I killed one and almost a second one with to much flow when I didn't notice my power head was set to 100% for a few days

Agreed. I just realized my auto text wrote can’t in my last post, but meant to write “can”. Corrected.

 

[block134]

Agreed. I just realized my auto text wrote can’t in my last post, but meant to write “can”. Corrected.

No worries. We both posted at the same time so I didnt see your until after I submitted mine.

 

[xLimitlessJR]

Had to be the direct flow. Thanks for the help guys.