Acro issues. Help.

[Bonessurf]

For months my green slimer was doing great. With plenty of new growth and color happening. But then over night all the polyps receded and never came back put really. Just a little bit. And I can't figure out why. All other corals like the birds nests, pocillopora, goniopora, frogspawn, chalices, montiporas, they're all doing great. This has been like this for about 5 or 6 weeks. These are before and after pics.

 

[Jabibi]

Do you have it in an area with enough current and enough light? Do you have any fish that are picking at it??

 

[uh.oh...]

fish would be my first thought. Maybe a parasite. Have you tried dipping? Flow/light would be the next thought. Finally, high enough alk?

 

[Jabibi]

Thats very true. Check your water and see what ur calcium and alk is at. If your alk is low chances are that your calcium is going to be really high

 

[Bonessurf]

The current and lighting I don't think is the problem. The whole round base of it grew in my tank. I'm going to do some testing this week and figure it out.

 

[Sniperhank]

Without knowing parameters I dont think we will be of much help. There is an obvious issue, that is for sure. Has anything changed in the tank recently? When was your last water change?