Tom202 September 25, 2017 Share September 25, 2017 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 Sent from my SAMSUNG-SM-G930A using Tapatalk Link to comment Share on other sites More sharing options...
Jon Lazar September 25, 2017 Share September 25, 2017 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. Link to comment Share on other sites More sharing options...
Tom202 September 25, 2017 Author Share September 25, 2017 Ok ima try that.... Link to comment Share on other sites More sharing options...
tygger September 25, 2017 Share September 25, 2017 Is this a new addition to your tank? Link to comment Share on other sites More sharing options...
paul b September 25, 2017 Share September 25, 2017 (edited) I have "Craftsman" Hammer with a similar problem. But instead of bleaching, it is rusting. Edited September 25, 2017 by paul b Link to comment Share on other sites More sharing options...
sen5241b September 26, 2017 Share September 26, 2017 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. Link to comment Share on other sites More sharing options...
paul b September 27, 2017 Share September 27, 2017 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? Link to comment Share on other sites More sharing options...
zygote2k September 29, 2017 Share September 29, 2017 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.... Link to comment Share on other sites More sharing options...
madweazl September 29, 2017 Share September 29, 2017 When heads retract like that, it can be an indication of too much light. Water parameters are where they should be? Link to comment Share on other sites More sharing options...
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