ph, ammonia, nitrate and nitrite water check question?

[hellokitty876]

Here is another newbie question.. LOL How often do I need to check the water in my aquarium for the ammonia, ph, nitrate and nitrite levels?? What is considered to be the appropriate levels for these?? I am going to get all my testing supplies this week, so any advice would be helpful. Thanks so much. :)

[Syn]

Id think that depends on your fish as to the PH and such, but id personally check for thew ammonia, nitrite and nitrate once or twice a week. Could be wrong.