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Log Book for March 17, 2004
GreenHab Report
Richard Humphreys Reporting

Readings:

Time: 08:00
Inside Temp: 78 F / 23 C
Outside Temp: 76 F / 17 C
Relative Humidity: 65%

Time: 12:00
Inside Temp: 103 F / 38 C
Outside Temp: 86 F / 33 C
Relative Humidity: 61%

Time: 20:00
Inside Temp: 60 F / 16 C
Outside Temp: 60 F / 14 C
Relative Humidity: 61%

Maximum Temp: 81.0 F / 27.2 C
Minimum Temp: 61.9 F / 16.6 C

(All measurements in C are calculated from the F reading and are to the relevant number of significant figures.)

Normal chores in the GreenHab were performed on each of these occasions.

Information downloaded successfully from datalogger with probe hanging in Tank #4. Following Mission Support advice datalogger information loaded onto hab computer.

Information downloaded successfully from datalogger mounted on the centre beam in the GreenHab. Information loaded onto Hab computer.

There was no flow into Tank #5 from the overflow of Tank #4 at 08:00hours. The water in Tank #5 was about 5 inches below where it should be. Crew updated as to increasing water use. At 12:00 hours the flow was about 2-3 drips per second and at 20:00 hours the flow had reduced to 1 drip every 7s. The water at this time was about 3 inches below the usual.

Both aerators are working, one is currently in Tank #2 and one in Tank #4.

Suds were checked in Tank #2 and were very low.

All plants were sprayed with water on each visit.

The sump pump is connected to a timer which activates the system at 12:00 hours and 00:00 hours. Unsure at this time whether it is working, but I have stopped doing it manually.

Once again, this time at 20:00 hours, there was a wet patch on the floor in the GreenHab. I was advised this may be condensation. There is too much water and too localized to be condensation. I have traced it to the pipe marked "re circ" which comes out from the bottom filter tank #2 and into the top filter tank #2. The water is being ejected with enough force that it is being splashed over the edge of the tank. I have again moved the pipe further into the filter tank but the pressure is moving the pipe around. I feel I will have to place a permanent fixing to keep the pipe in place.

Despite the low levels of water in the GreenHab the TST tank is being filled twice a day by the pump.

Requesting permission for a permanent fixing to keep the pipe in filter tank #2 from wasting valuable water. Requesting advice on location of light sensors to monitor light levels above the plants.

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