How bad is high Ca?

[mskohl]

So, I've tested most all the things I can on the 75g. tank and everything is within my target range except Calcium. It's off the charts. What should I do here? I've got corals in there that use Ca, should I just let them use it up or do I need to change out some water? Keep in mind though that I'm currently working my way through a bucket of Oceanic, so the new water will have lots of Ca too.

 

[djc1026]

It doesn't register at all? Do you have a different test kit? Alkalinity isn't super low? If alk and pH are in line, I wouldn't worry too much and let it get used up.

Dave

 

[mskohl]

I used salifert and IO's both. On the Salifert kit, I used all of the reagent in the 1ml syringe and the color still didn't change. On the IO, I kept adding drops until the color changed. I think it came our somewhere around 800. I lost track and was adding drops to see if it would ever change.

 

[BigScott]

an i though mine was high in my 75...at 550.. ak at 9..

 

[naterd1976]

I read on the chemistry forum that high calcium will not hurt livestock/corals directly. The only thing it will do is precipitate when it reaches a certain threshold. The precipitation could damage pumps or cover corals/ which would indirectly damage them if not blown off.

 

[pwhitby]

you sit back.....and let it drop on its own. It will do so.

You can also do water changes to help bring it down.

Have you been dosing calcium?

Paul.

 

[mskohl]

tested it tonight. dKH is 8.6 and Calcium is 720.

I'll wait it out I guess. Nope, no dosing.