<span style="font-family: Times New Roman;"><span style="font-size: 13px;">After doing a water change and cleaning my tank last night, my wife accidently touched a large sea urchin in my tank.</span><span style="font-size: 13px;"> </span><span style="font-size: 13px;">She didn’t get injured at all but the urchin immediately started spewing what I’m assuming is some type of defensive cloudy poison within the tank.</span><span style="font-size: 13px;"> </span><span style="font-size: 13px;">This lasted for about a minute.</span><span style="font-size: 13px;"> </span><span style="font-size: 13px;">None of my fish or corals seemed to be effected at all.</span><span style="font-size: 13px;"> </span><span style="font-size: 13px;">Is this anything that I should be concerned about or do to keep everything healthy?</span></span>