Hi I've got a 29 gallon tank with guppys, platys, and mollies, and a few catfish and neons. It's been running now for about a month. I have been doing water changes pretty much daily now as I have been reading online to do but my ammonia levels won't drop and my ph stays at 7.4 and ammonia at 0.2 ppm. My fish were doing ok but now they are starting to die. My guppy started darting around the tank and crashing his body into the gravel and running into the sides last night after another water change and one of my cats died. Also one of my black mollies female prego is acting funny now she acts as if she can't see well and kind of sinks to bottom of tank. I also have baby mollies in there now and they r dying too now. What am I doing wrong? I am adding start rite water conditioner to my tap water before adding it but maybe I'm not putting enough or to much. Help stressed out and losing my favorites??