[syncro]

Also check out this (new to me):
http://saltaquarium.about.com/od/aqu...iatoxicity.htm

Some people make the mistake of performing a partial water change to reduce ammonia levels during the cycling process. Normally, when ammonia levels go up, the pH drops at the same time. By performing a partial water change, the total ammonia levels may drop slightly, but the pH will also rise (the buffering effect of new saltwater), increasing the toxicity of the remaining ammonia. A safer method to reduce the ammonia levels would be to use an ammonia neutralizing product such as Amquel, then perform a water change to "freshen" the water, if you wish.