Echinopora turning red

[Aquaristjim]

So, I've had this echinopora for just over a year now and it's been doing so well! About a month ago I had a 'rockalaunch' where a pesky urchin knocked a rock straight through the plate. I've positioned the plate back in its original place as well as I could have. It would seem that the rock going through it induced these stress red marks but over the period of a month it's been getting worse. Any help on how to save this would be appreciated.
Nh3 -0
No2 - 0
No3 - 10
Po4 - 0.03
CA - 440
Mg - 1200
Alk - 8.0

 

[fishguy242]

hollywood!! hi just try to keep debris off poss increase flow across them,but also with higher flow ,longer stingers!!! happy reefing