Hi, my bf and I decided to get a tank and went recently to petsmart to get a tank and fishes without knowing anything at all. ( I had done some research but still, i was confused).
we got there and got lectured on the nitrogen cycle. the lady told us that "we needed to get ONLY the tank add some seachem prime conditioner and wait a week... and that the cycle would start (and complete) without the fish"
so we got a 28 gallon, gravel and decorations.
later on doing some more reading i figured out the obvious:
1)bacteria need food, (amonia) to reproduce. No fish = no amonia = no bacteria = no nitrogen cycle.
2) even with fish there will be no completed cycle in a week, it will take like one month or more...
Now, the tank has been up for about 4 days full equipment working and i have white cloudy water...
I dont know the causes for this since there are so many explanations online and i dont have anything producing amonia for a bacterial bloom. I also washed the decorations and gravle before putting it on the tank. the worst part is that we didnt get the testing kits because the seller told us "bring a sample and we'll test it here for you"

so...
1)I dont know what is that cloudy white water for
2) and if the water is capable of sustaining even a couple hardy fish...