I am fairly new at keeping African Chiclids. I have been doing a good job of changing the water 20% daily after I had a mishap with a wee bit of Dawn in the water. Thankfully I saved all the remainder of my fish once I saw them dying and figured out what happened. I fiercely cleaned the tank daily and also cleaned out the Fluval FX4 filters for my 75 gallon tank using aquarium water. One of my fish has a area behind his head before the fin where it looks like someone bit him. I was advised to use Melafix for a week removing the carbon and then do a 50% water change. I used all the guidelines for changing water and the parameters have always been good. However after this 50% change and adding in the proper additives including bacteria, the tank is in full bloom. Did I do something wrong? Will this hurt my fish? Or will it gradually clear with no harm to the fish? And can I continue with the 20% water changes every other day or so? Thanks for any feedback!