HI there! I just purchased a 75 gallon tank off of Craigslist and I just set it up and started to fish less cycle. I bought ammonia and brought the level up to 4 ppm. It's been four days and there isn't even a slight change. I added a bottle of tetra safestart and it still hasn't changed. The ammonia's ingredient list says ammonium hydroxide, is that okay? It doesn't have any scent but it suds a little. My friend has a seven year old tank and is willing to help me seed the tank. How should I correctly seed it? How much time would that take off of the cycle? Is the ammonia ok? Please and thank you! Also, if someone could give me a step by step for cycling, that would be amazing!!