How often do I add more nutrients?
 

I just got started in hydroponics and am having a few problems. I am using Bcuzz products and an agritest-1 meter (which does not seem to work with Bcuzz). How often do I add more nutrients? I added the correct amount to water to start off with but I have no idea how fast the system uses the nutrients? Can I just add a lot of nutrients or can over feeding cause problems?

You add nutrients every time you add water to your tank. You only add plain water if you want to dilute your solution.
You change the entire tank every two weeks or sooner if you detect a problem with your plants.