dead coraline

[Snappy]

Is it possible to kill coraline algae from over dosing with calcium? That doesn't make sense to me but when I got back from vacation last week all my coraline algae was white and the ca levels were quite high (about 540). The kid who was tanksitting overdosed on my additives, but would that do it? Perhaps I have another problem. My corals all look fine though, any ideas?

 

[returnofsid]

I don't think it's possible. From what I understand, when you overdose Ca, it just precipitates out of the water and becomes a solid.

 

[Reefdaddy1]

Are you filtering with Carbon or Phosphate remover? Maybe they are old and some other things got into the tank that normaly would not.
I have found that using carbon and Phosphate remover with loweer light levels will really make the coraline take off. Maybe your bulbs are need of changing as well. But any of those would could be the problem as well.

 

[Snappy]

Are you filtering with Carbon or Phosphate remover? Maybe they are old and some other things got into the tank that normaly would not.
I have found that using carbon and Phosphate remover with loweer light levels will really make the coraline take off. Maybe your bulbs are need of changing as well. But any of those would could be the problem as well.

My bulbs are only 4 months old and I change my carbon once every month. The coraline in my refugium turned white as well which is only pc lights so I doubt it's the lighting. The only time I've seen light affect coraline is when it gets bleached from too much light too soon. That isn't the case here.
I have been using the polyp-labs "reef-fresh" program, similar to zeovit, and didn't run it during that week while I was gone because I was afraid the tanksitter would be overwhelmed with all the extra chemical additions. It's just weird that the only thing affected in my absense was the coraline.