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Log Book for April 19, 2004
GreenHab Report
Gregorio Drayer & Alyssa Rzeszutko Reporting

Readings:

Time: 09:30
Inside Temp: 68 deg F/ 20 deg C
Outside Temp: 40 deg F/ 4.4 deg C
Relative Humidity: 64%

Time: 12:00
Inside Temp: 78 deg F / 25.6 deg C
Outside Temp: 54 deg F / 12.2 deg C
Relative Humidity: 60%

Time: 18:00
Inside Temp: 66 deg F/ 15.6 deg C
Outside Temp: 50 deg F/ 10 deg C
Relative Humidity: 61%

Hab (taken at 18:00)
Minimum Temp (& RH): 61 deg F/ 16.1 deg C/ 16%
Maximum Temp (& RH): 72.9 deg F / 22.7 deg C /26%

Today:

Plants watered; salad machine, nursery, and surface plants all thriving.

Recirculation pump through Peter's gravel experiment was accidentally left on again, depleting Tank 4 (again). We will attempt to put a timer on the pump tomorrow to guard against this mistake. However, as this element is not a crucial part of the system, we may decide to disable it for the duration of our rotation.

Data collection for the new weather station continues; see weather report.

Open Issues:

Nitrate removal; we evaluated Crew 27's assessment and proposed options for this issue (see report of 4/10), and we have decided to add air stone aerators to the anaerobic tanks, Tanks 1 and 3. We will work on this tomorrow, Tuesday.

Tank 2 Water Hyacinth & Azolla Visual Report
Tank 2 Water Hyacinth & Azolla Visual Report
Image Taken from approx. 30cm above surface

Tank 3 Azolla & Lemna Visual Report
Tank 3 Azolla & Lemna Visual Report
Image Taken from approx. 10cm above surface

Tank 4 Water Hyacinth & Water Lettuce Visual Report
Tank 4 Water Hyacinth & Water Lettuce Visual Report
Image Taken from approx. 30cm above surface

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