Flooding for 15 minutes every hour is a common timing..... Your water level looks too high; it's usually kept 1-2" below the surface---because many plants don't like being really wet, and keeping the top of the growing medium dry (and water in the dark) will prevent algae problems.
Comment by jason parisi on October 2, 2011 at 3:29pm
a little swiss chard, some lettuce and chives. The seedlings are basil, mizuna greens, and cimmaron lettuce
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