Readings:

Time: 0755
Inside Temp: 50 deg F / 10 deg C
Outside Temp: 40 deg F / 4 deg C
Relative Humidity: 65%

Time: 1400
Inside Temp: 72 deg F / 22 deg C
Outside Temp: 57 deg F / 14 deg C
Relative Humidity: 62%

Time: 1820 Inside Temp: 62 deg F / 17 deg C
Outside Temp: 40 deg F / 4 deg C
Relative Humidity: 65%

Minimum Temp: 48 deg F / 9 deg C
Maximum Temp: 90 deg F / 32 deg C
(Note: Temperature readings were taken in Fahrenheit; Max/min T will now be taken from Channel 1 of the Oregon Scientific unit. Just remember to clear the max/min values at the end of every day by pressing "Memory" for 3 seconds.)

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

• Both aerators are working, one is in Tank #2 and one in Tank #4.
• Only air bubbles in Tank #2 & 4
• All plants were sprayed with water and fed. Currently the carrots are growing, and some radishes have sprouted in the last 2 days.
• The sump pump is connected to a timer which activates the system at 12:00 hours and 00:00 hours.
• The plants in the buckets have died. As we reported yesterday, there was only a layer of black pudding remaining. Jim served chocolate pudding for lunch yesterday. Will he meet with a nasty "accident" before the end of the rotation?
• The plants in Tank #4 look like they are doing well.
• Water in tank #5 is running normally.
• Turned on recycle pump for 15 minutes to a 1/2hr to remove algae from the top of Tank One. Close valve after use to avoid water siphoning back to Tank 4.
• The TST tank is still being filled as required by the pump.
• TST water filter flowrate is still acceptable.

Additional Chores:

• Nitrification/Denitrification Experiment.
  Operation State: 6hr ON/OFF cycles with a stir bar providing aeration.
  Day 0: Soapy water (1g/l concentration of soap) in a 2L beaker with 1700ml of water was inoculated with 25 ml of concentrated solids from the underground grey water tank. Soapy water of this concentration was shown to have: pH of 7.8; NH3 3 mg/L, NO2 0mg/L, NO3 10mg/L.
  Day 2: Took readings: pH 7.8, NH3 0.25 mg/L, NO2 0mg/L, NO3 0mg/L. Added 2.4 g of Oasis soap/ 1600ml which is ~ NH3 4.5 mg/L, NO2 0mg/L, NO3 15 mg/L. Nitrification/denitrification appears to be occurring; however, a control will be started to verify this.
  Readings will be taken tomorrow.
  
  
• TST work - Float Switch
  Action: Install a new float switch per instructions upon locating a DC float switch. Received notice from Mission Support that the silver float switch, even though it is labeled AC, would work. Unfortunately, we could not locate that float switch, and only have the black AC float switch.

Open Issues

• "Hab Power" in the Greenhab: CLOSED
  Status: HAB POWER is from the solar panel pod. The SOLAR PANEL setting is actually from the 12 VDC power supply under the TST.
  Action: These were correctly labeled today. Additionally more descriptive tags and a water flow diagram were added to the Southern GreenHab.
  
  
• Electrical Diagram of the Greenhab
  Status: We have finished mapped the wiring of the GreenHab to 99% of the system. We are still updating the electrical flow diagram in Power Point (and continued to do so today). This file will be uploaded to our Crew 27 directory along with other relevant procedures in the coming days
  Proposed Action: Finish diagram tonight if possible.
  
  
• Tacking down loose wires
  Proposed Action: will be done in the coming days.
  
  
• The Southern louvers need to open more for proper ventilation: CLOSED
  Status: 5 solar panels reconnected to the solar pod and routed to the GreenHab fuse box for use by the DC devices, including the Southern Fan and approximately 18VDC is available under solar power. Under Hab power, there is 12 VDC available.
  Recommendation: At this time, I would just leave the Southern Fan and related VDC system as is. Instead potentially add those small Solar Fans.
  
  
• Yellow Laptop as part of HOBO logger system
  Status: The yellow laptop hab computer has some port malfunction which is preventing the HOBO download. During the HOBO testing, the baud rates were synchronized and correct port selected. The manual suggests that it might have been due to another program on the computer interfering with the Boxcar 4.3 program.
  
  
• Treatment system appears not to be removing nitrate.
  Status: Reinnoculated trickling filter #2. Added water hyacinths and water lettuce yesterday.
  Action: Continue to monitor system. Will add bacterial solids from 110 gallon tank to trickling filter tomorrow.