I am at 3 weeks into cycling my tank with Dr Tim's one and only plus his ammonium chloride. My 20g tank is cycling 2ppm of ammonia to 0 in 24 hours. My nitrites are around 0.5-1 24 hours after adding ammonia. My nitrates have been at 50-100ish ppm but I have not done a water change. There is no algae growth in my tank but I hear that could come later. Since my tank is converting 2ppm of ammonia to 0 in 24 hours, am I done cycling now? Is it time to do a water change and add fish or clean up crew? A bit confused as I do not have algae growth since I was going to do the CUC first. Thanks!