I have a 55 gal which I have been doing a fishless cycle. It now processing about 3ppm of ammonia a day. It has 0 ppm ammonia this evening, 2-5ppm nitrite and 40-80ppm nitrate. I also moved some filter media from an established tank today. I have some shrimp, snails, and plants arriving tomorrow. Can I do a large water change and put some snails in this tank? Do I need to wait? Am I close? If tank is not ready: Is putting in 2-3ppm of ammonia a day the right thing to do without snails?