Purpose: Define problems to be addressed in our design iterations

Date: April 23, 2019

Time: 4:10-4:45 pm

Place of Meeting: Middlebrook Gardens, 76 Race Street, San Jose, CA

Who Attended: Brooke, Keala and Lindsay

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Components

• Four “media” beds (IBCs - Intermediate Bulk Containers)

• One, long “floating-raft” bed

  • Note: water is cycled every 2-3 days (should be every 2-3 hours)

• Two barrels (1 blue and 1 white)

• One generic brand pump (LL1200)

  • Note: not sure about GPH (gallons per hour power)

  • Note: pump is attached to a PVC pipe that is wrapped in a mesh bag for filtration purposes (does not appear super effective, gets clogged easily)

• Oxygenator

  • Note: if the PVC ends 18 inches or more above the pond, the water will oxygenate itself naturally

 

Schematic

To do: create a sketch

1. Fish pond

2. Water filtered and pumped upwards to intersection between the blue barrel and the PVC to Bed 1 and

   • Bed 1 filters directly down to the fish pond

3. Blue barrel leads through PVC and into Beds 2, 3, 4

   • via gravity

4. Bed 4 leads to the long, ground-level bed

   • via gravity

5. Long, ground-level bed leads through PVC to the fish pond

   • via gravity

 

Measurements

• 2L / 1.98s into pond water flow rate into pond from long-bed (only)

  • 1.01 L/s

• 2L / 2.88s into Bed 1

  • 0.694 L/s

• 2L / 6.38s into Bed 2

  • 0.313 L/s

• 2L / 16.50s into Long Bed

  • 0.121 L/s

• 50 inches from ground to PVC that flows into Bed 1 and 43 inches from ground to PVC that flows into Bed 4

  • 7 inches decrease in height across beds

  • 126.5 inches in length

  • 2.5 inches diameter