dsoz Posted August 14, 2012 Share Posted August 14, 2012 Sounds like everything will be fine. The brown cloud that you released was probably just detritus, and it usually does not cause problems (except long term to increase phosphate and nitrate levels). It is usually not toxic. What is scary is the BLACK sand or black discoloration on the bottom of rocks. That means that it went anaerobic and something down there made sulfides. The sulfides cause the rock and sand to turn black; it smells like rotten eggs; and it is very toxic to marine life. Be wary of sulfides.(scary) dsoz Quote Link to comment Share on other sites More sharing options...
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