Sudden Bacteria Bloom
After reading around for quite awhile, I've come to the conclusion I'm going through a serious bacteria bloom. The water became extremely couldy last night in a manner of 1 or 2 hours. My fish all began to breath very heavily, and I immediately did a 50% change (on a 60 gallon tank I with a sump and a cannister). I triple checked all my parameters, and nothign was wrong. Ammonia was 0, Nitrite was 0, Nitrate's in the 20-30 range.
I had just added a hi-fin cardinal along with 3 snails, 6 hermit crabs, and a chocolate starfish. In the tank beforehand were two small ocellaris clownfish. I did the water change, checked the levels, and everything was fine. I was told by the guy who helped set up my tank that it would be good to put Nutrafin "cycle" in whenever I added new fish, so I did that.
Also, when the trouble started, I put my small aerater in the sump to hopefully add some oxygen. Any suggestions on what to do next?