Monday, February 10, 2014

Aquaponics

We are getting into Aquaponics as another way to grow food with less resources that will provide through the Winter. We will also be raising Talapia fish as a way to get some protein from the fish we will be using for producing our fish fertilizer.

We have a 30 gallon tank where we will start with 2-3 fish and we will using a system to pump water from the task through a 15-20 gallon grow bed with a gravel bed as medium for the plants to grow on. The medium displaces about 60 percent of the volume of the bed, so we will be cycling through ~6-9 gallons of fish water through the bed before it returns back the task cleaned by the plants.

For now, we have created a raft style system floating in our fishless tank that is being used as an experiment to see how well the bio-filtering works. Here is a picture of the raft in the tank. We have planted 17 pots with different greens ranging from lettuce to green onions.












The next step is to run the plumbing from our tank and pump to a grow bed filled with medium and then a tube coming back to the tank from the bell siphon used to drain the bed. We also want move the raft to a bed and use a sump type system for this, where we will use an auto-siphon to siphon water from the tank to a tub where we will the raft floating in water with shrimp underneath. From the tank, we will pump water to the medium filled grow bed  and back to the fish tank via the siphon again. We will post pictures as time progresses.

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