fhydro, you do know if the roots are sitting in water/nutrients they can turn brown and die off and rot. They will give off an odor and affect the Ph and nutrient uptake of the plant. We give our roots H²O² to help them once they turn brown so they can fight off fungus and rot that is part of good Hydroponics management.

Proper root maintenance is also part of a good Hydroponic management technique.

Do what you are comfortable with dude. I just though you should know a little more.

Peace and happy growing