With my Nuun tablets, I rotate between two 59oz "Simply Lemonade" fruit juice bottles that I keep in the door of my fridge. When I empty one bottle, I add water and two tablets, then move it into the second slot in the rotation for about a week while I finish off the other bottle. By the time I finish that bottle, the one I refilled a week ago is "flat" and not fizzy. When I refill a bottle, I keep the bottle cap on loose to let the fizz escape. What I like about this two-bottle system is that I always have a full bottle available and don't have to deal with waiting for the tables to dissolve just before a ride.
