So I'm cycling my 55 now, but my male molly has been bullying my established tank and killed one of my fish so I put him in the new tank. Currently have an old filter in there to help with the cycling process, but I doubt that's enough to truly get the tank cycled. So right now there is .25 ppm of ammonia. How much is too much before I do a water change? Currently the tank only has a pleco and the molly so the build up shouldnt be too rapid.