So tonight I added a pink pin cushion urchin to my tank and after it had been in a few hours and was doing very well I added the order of pods I got to refresh my gobys supply. Well next thing I know the urchin is spewing brown stuff and climbing to the top of the tank. Then my skimmer goes off the deep end producing bubbles like I dumped a bottle of dish soap in. It overflows, my tank bubbles up and ive spent the past hour scrambling. Meanwhile, everything else is doin fine and water test all are normal except ammonia is registering .025 now. I shut the skimmer off and am hoping the filter clears things up a bit? Oh yea, I also did a partial water change. Any thoughts or suggestions? Thanks!