This photo records the progress of the lettuce in the aerospring unit using the 90 watt UFO LED since October 20, 2009. The growth in just two weeks has been amazing, and although I could begin harvesting leaves from the plants, I will let them grow for one more week before doing so.
This unit is a veritable lettuce machine which requires very little maintenance. In keeping with my usual routine I have changed the nutrients at two week intervals, but other than that, it simply chugs along unattended.
Now I am regretting that I have waited so long to test the aerospring unit.
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