How much fizz in water carbonated with ISI whipper? I have an ISI whipper, and want to carbonate water using this device and CO2 chargers. This should in principle be possible. I have filled the whipper flask up to the maximum and charged it with one charger. My experience with this technique is that there is rather little fizz in the water when I dispense it from the flask. 

Am I doing something wrong here?

I use the gourmet whipper plus, ISI Soda charger and cold, ordinary tap water.
When carbonating in the ISI whipper, it is important to start with a cold liquid (or fruit, i.e. carbonated grapes).  Charge with one CO2, agitate, then slowly release the pressure so that you remove all air from the charger.  Then, charge with one or two (depending on size of ISI) CO2 charges to fully carbonate.  If you leave out the first step you are simply compressing trapped air, rather than dissolving CO2 into your product.