the ammonia should go away by it's self as the tank matures unless you have a very large bio-load. in that case, use kordon's ammonia remover in the top off water also. it removes ammonia, clorine, and clorimines. i've been using it for years and it works fine. as for the phosphates, thats probly because of the water you use. get yourself some phosphate remover and put it in the filter and you should be fine in a couple weeks.