I have been keeping fish for like 5 uears now. I resently added 5 cichlids to my 125 tank with my other cichlids and did a water change just last week. I then saw my rams cichlids have severe fin rot and some of the new cichlids have fin rot also my leopard ctenopoma has cloudy eye. I added 2 jars for hiding one was painted and the other clear. I checked my levels and everything seemed right I was wondering if the painted jar could of lead to the fish having issues since I noticed some paint had wasted off. I have removed the jar. The fish were all healthy and lively before adding the new fish aswell. Currently treating with melafix and pimafix. Anyones advice is needed I help to figure out what is going on in my tank. I don't know if I need to water change just yet since tank is being treated for couple days.