Cycling a tank

[Dearth]

You should start to see a diatom bloom as well looks brown it will usually cover your sand and rock and starts to look like this its usually a good indicator your tank is cycling

[Summit09]

I'll be adding a shrimp tomorrow, as it has been a week and ammonia is at 0, nitrates at 5 or less, and the nitrites came down from .1 to 0.