nutrient question

i am on my first week of veg under CFL's....my question is this: how often should i add nutes? or do i add nutes when i change the water bi-weekly? by the way i am running a DWC in a 3 gallon bucket...thanks for any help

I guess it sorta depends on what kind of Nutes you're using.

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In vegging,
I ran 1/4 strength the first week,
then 3/4 strength the second week,
full strength the third week on.

In flowering,
I ran 3/4 strength week 1,
After that, full on
Then if you decide to flush, no nutrients for the last 7 to 10 days.

Your best bet imo is to add nutes only when you change your reservoir, and top off with fresh water (no nutes) when needed to keep water levels up; however, when the plants really start drinking (when buds are present) you'll be running almost straight water after 7 days of topping off with fresh, so with that method, weekly res changes would be a must unless you were measuring ppm.

Green is right..During the first few weeks of veg, I would change my water once a week and add only fresh water during that time if need be...when the plants started to drink more, I would do a flush every 4 days and top off with fresh water..as the plants get older, they are going to be able to handle more nutrients at a time then they can now.