Hi there, Gardenpixie! I don't know how to track net carbs on Fitday, but I do know how to track water. There is a Water, Tap entry in the database already. You can add that to your Food Log and track it like you'd track any other food. There are also Bottled Water entries. And, of course, you could make a Custom Food, if, for example, you like to add additives to your water (lemon, lime, Crystal Light or whatever).
There is also a "Water as an Ingredient" entry but personally I think that's more trouble than it's worth.
Anyway, just a few ways you can track water
~ Epixi, a work in progress
Female, endomorph (
doomed from the start, hehe)
- Highest ever BMI (Jan 2004): 39.31
- BMI as of Mon, Apr 4, 2016: 26.86
- Target BMI: under 25 (apx 12 to go)
- Desired BMI range: 22-23 (apx 20-25 to go)
Net loss since highest = 79.5lb