Confused on over watering: How come DWCs dont over water plants?

I can overwater a plant in soil however I can totally submerge roots in gallons of water (via DWC) and the plant does not get over watered. Why is this so?

-T

Because in soil when you over water the soil is compacted or full so the roots don't get any air.

imnotme said:

Because in soil when you over water the soil is compacted or full so the roots don't get any air.

Click to expand...

Took the words out of my mouth. Roots need oxygen, which is provided in hydro by aerating the water and/or exposing them to air.

If you are prone to overwatering, no problem, just add more perlite to your soil mixture.