High Tide Aquatics

Cloudy water after carbon/gfo

I used to run carbon/gfo on my tank long time ago but not since I moved a year ago. So I added it back last weekend and on a 2nd day water became cloudy, corals are stressed and my peppermint shrimp died.

I prewashed carbon/gfo and let it sit in a bucket of RO water for several hours with pump running.

What could go wrong? Or is it just a coincidence? I don't remember changing anything else.
 
I've done numerous carbon/ GFO changes and never a problem. it's a mystery to me considering you prerinsed it. Is there anything that could have contaminated it? Maybe too many nutrients were removed/ stripped from the tank causing the stressing of corals, but that's just a theory.
 
lattehiatus said:
Could just be a coincidence, but check against RHF's article from a while back?
http://reefkeeping.com/issues/2004-11/rhf/index.php

I didnt know GFO had so many side effects, I bet that was it.
 
Have you removed the GFO and carbon from the system? If not , I'd suggest removing at least the GFO immediately.

If you are seeing calcium precipitation, there should also be a drop in alkalinity, pH, and (to a lesser extent) calcium. How are those parameters checking out?
 
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