Well the bacteria for cycling isnt in the water, its on the gravel, plants, decor, and other things like that, but it is mostly in the filter. The best method I have heard is to take a sponge filter from an already cycled tank, and squeeze the water in it into your new tank. The water will be brown and you will probably think you are just dirtying the tank, but the brown stuff is the bacteria that you are trying to get through cycling.
To put it quickly, use your gravel, plants, decor, but best is a sponge filter. Not water.