i say they are crucial for when you just start establishing a tank. That way you can watch when it peaks, and then when ever thing breaks down and starts to become safe. I dont know what i would do without mine.
Z Trip;1503035; said:What kind of test kit is good? I looked at petsmart but wasn't sure if I should change brands.
Z
It's possible to keep fish for years without testing or even in some cases...without changing the water but that hardly makes it the responsable thing to do.
Without knowing exactly whats going on with your whater chemistry you have no way to anticipate problems and no way to properly cottect them.