Readings:

Time: 0830
Inside Temp: 63 deg F / 17 deg C
Outside Temp: 44 deg F / 7 deg C
Relative Humidity: 65%

Time: 1220
Inside Temp: 82 deg F / 28 deg C
Outside Temp: 62 deg F / 17 deg C
Relative Humidity: 65%

Time: 1820
Inside Temp: 69 deg F / 21 deg C
Outside Temp: 59 deg F / 15 deg C
Relative Humidity: 64%

Minimum Temp: 50 deg F / 10 deg C
Maximum Temp: 84 deg F / 29 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 appeared to have died; only a layer of black pudding remains. Would you like some for dinner tomorrow night?
• 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.
• The TST tank is still being filled as required by the pump.
• TST water filter flowrate is still acceptable.

Additional Chores:

• Clearing algae from the system.
  Previous Action: Cleaned and reinnoculated Trickling Filter 2 from the 100 gallon grey water tank. The translucent trickling filter reservoir tanks were wrapped with black plastic to cut out the light. The first four tanks were scraped to remove algae, and the rear section covered of the first four tanks with green plastic (our punctured air mattress/couch) to impede further growth.
  Suggested Daily Additional Chore: Turn on recycle pump for 15 minutes to a 1/2hr to remove algae from the top of Tank One.
  
  
• 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.
  
  
• TST work - Float Switch
  Results: The existing fluid level sensor or high level alarm does not turn off the power to the TST fill pump when actuated. It is not easy to disassemble or troubleshoot, because it was placed in with RTV or aquarium sealant.
  Action: Install a new float switch per instructions. It turns out that we had located an AC float switch the other day, so we still need to find a DC float switch.
  
  
• Aquatic plants: Water hyacinth and water lettuce arrived today. We put most of them in tank 4 and 2 water hyacinths in tank 2 (pictures were taken).

Evaporation Test:

Evaporation test concluded today. Estimated water loss for 5 Tanks: ~24L /day (~6.34 G/day) if uncovered. If 50% covered, then water loss would be less.

Open Issues:

• "Hab Power" in the GreenHab:
  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 will be returned to their original labeling in the coming days.
  
  
• Solar Panel Pad: IMPORTANT NOTE
  Status: It is working; however if you find the system completely off, the load (fan, pumps etc) have been disconnected to allow the battery to recharge. If you see this, turn switch to newly labeled Hab Power and next time you visit the GreenHab (a few hours) try to flip it back to Solar Power.
  
  
• 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. This file will be uploaded to our Crew 27 directory along with other relevant procedures in the coming days
  Proposed Action: Finish mapping the GreenHab in the coming days.
  
  
• Tacking down loose wires
  Proposed Action: will be done in the coming days.
  
  
• The Southern louvers need to open more for proper ventilation.
  Status: 5 solar panels are connected to the solar pod and routed to the GreenHab fuse box for use by the DC devices, including the Southern Fan.
  Question: Should I add the working solar panel that is just resting unconnected in the Northern Hab to this system. 4/6/04 my only concern is the load through the Sunsaver-10 controller.
  
  
• Yellow Laptop as part of HOBO logger system
  Open Issue: The yellow laptop hab computer has some port malfunction which is preventing the HOBO download.
  
  
• Treatment system appears not to be removing nitrate.
  Actions: Reinnoculated trickling filter #2. Added water hyacinths and water lettuce today.
  
  
• Temperature readings from Oregon Scientific: CLOSED
  Observation: It records Temp and RH from 2 channels. Channel 0 is from the base unit in the upper Hab level. Channel 1 receiver is located outside of the rear airlock on the strut to the left.
  Action: Today I downloaded the directions and put them in the manual box. You need to clear the min/max values daily in order to obtain correct readings. This is accomplished by holding down the "Memory" button for 3 seconds while on each channel.