Ammonia Problems?

[Franciscohummer]

Hey guys!
Like I said earlier, im starting a 90g tank. Its allready cycling and all the tests are looking good, excepting for ammonia. I use a SERA test, and its supost to show a yellow color, meaning 0,0. But the problem is that it doesnt shows any color, it keeps transparent. Any ideas?! Please help me

[stingythingy45]

Can you get another test kit?
Even an API will work well.

[Randy Holmes-Farley]

I've not used that kit. So it claims you should get some color under all circumstances?