he didn't say anything about taking a break...he is saying DWC is by practice...Submerging the entire rootzone in oygenated water, with nutients.

SO...The though that you had to take a break is a debatable issue, Imo. Personal Choice and experience. After all, that is what is cool about hydro... You can just about grow anyway you want and still produce something decent.

do level=Dissolved Oxygen level