Hey everyone, I recently (about a month) had baby yellow lab cichlids, I got a friend (cichlid expert) to strip my female, then I kept the babies in a 10g. All of a sudden this morning I found 7 of the 14 fish I orginially had dead. The rest are gasping for breath. The water peramaters are all perfect and the temperature of the water is right on! However I did add some declorinated water to the tank yesterday, and added the weekly chemicals such as waste control and cycle. Would it be caused by an overdose in chemicals?