Purple hammer bleaching

[Tom202]

Anybody know what can cause this I run radions and my hammer is in a very low.light corner...tank parameters are good.everything else.is thriving

 

Pic

 

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[Jon Lazar]

IME bleaching is usually caused by too much light.  Especially in tanks lit by LEDs, because they put out a lot of light but don't appear that bright.  A spike in water temps can also cause bleaching.

 

Move your coral into a partially shady spot, and consider turning down your light intensity.

[Tom202]

Ok ima try that....

[tygger]

Is this a new addition to your tank?

[paul b]

I have  "Craftsman" Hammer with a similar problem.  But instead of bleaching, it is rusting.  

 

Edited September 25, 2017 by paul b

[sen5241b]

WHAT CHANGED BEFORE BLEACHING?

 

When I see corals in trouble and assuming there were no obvious changes, I just go ahead and do a 40-45% water change? Half the time this solves problem.

[paul b]

WHAT CHANGED BEFORE BLEACHING?

 

When I see corals in trouble and assuming there were no obvious changes, I just go ahead and do a 40-45% water change? Half the time this solves problem.

 

What happens the other 55 or 60% of the time?  Do the corals turn into wood?  

[zygote2k]

WHAT CHANGED BEFORE BLEACHING?

 

When I see corals in trouble and assuming there were no obvious changes, I just go ahead and do a 40-45% water change? Half the time this solves problem.

silliest thing I've heard in a long time....

[madweazl]

When heads retract like that, it can be an indication of too much light. Water parameters are where they should be?