26 May 2013 – This blog is an attempt to document the 4525 Goddard pond conversion to Aquaponic farming. The picture below is a bird’s eye view of the whole pond with blue gill, tilapia, flag fish, gold fish, and mosquito fish. The tarp at the top is covering the deep end to reduce the amount of sun that might encourage algae blooms. There are a total of 5 tubs in two sizes: 100 Gallon and 300 Gallon.
The shallow end was fenced off to prevent fish from entering the shallow end but that didn’t work. The tilapia babies were able to invade along with the blue gill and have grown up on that side. Unfortunately, the tilapia have eaten the water lilies that were planted to offer more shade. They’re trying to grow back and so far haven’t been affected by the tilapia this year. At least they eat the Cuban tree frog tadpoles in the shallow end so we’re not propagating invasive species. Also in the shallow end, the tub functions a dual purpose of filtering detritus from water through gravel as well as creating a current to prevent stagnation. In the picture above you can see the 300 Gallon tub at the top of the picture (south side) and below is a full shot of the tub. The banana plant is a miniature variety, the alocasia (right) is a metallic variety, and nestled below that is another alocasia of the velvet variety.
The 3 tubs below line the north side of the pond and contain 2 types of substrate: hydroton (bottom) and river gravel (top 2). The top 2 use the same pump to fill the tubs. The hydroton tub disperses water from the pond across the bed in the ladder tube hydration system. To see how a bell siphon flush system works, watch the video below.
Once the bell flush system exceeds capacity, the water begins to flush out of the tub and back into the pond, as illustrated below.
The day I shot most of these photos, a native lily bloomed in the shallow end amongst the lily pads in the picture above.
The tub below contains the green beans and basil spice. The plant to the far right is a green bean that volunteered itself from last year and sprouted around January 2013. The other green beans from this year’s crop, planted in early April, appear towards the center and right front of the picture. The tall plants in the back are basil.
Focusing in on the more mature green bean plant, this volunteer has grown compact and tight, as illustrated in the picture below.
Focusing even closer on the volunteer green bean plant, the picture below shows the beans and flowers maturing under the leaves.
The picture below shows the summer yellow squash, also planted in early April. This is the middle tub that also contains okra.
The picture below is the eastern tub with an okra plant, a row of corn, and an eggplant.
In the picture left you can see a closer view of the 4 week old seedling. Due to the amount of nutrients and substrate contents, these aquaponic plants grow slower. In addition, this year has been cooler than normal and we’ve even had to endure a hailstorm in May. And finally, the eggplant. This specimen, pictured below, is about 3 years old and has never produced any fruit. It has bloomed constantly during the summer months but never became fertile. Normal life cycle is typically 1 year, so this is the end of this one and will be removed soon.
The main point of this blog is to log our experiments and learn to grow larger crops for better sustainability and reduced grocery expenses. We are also experimenting with 5 gallon buckets using soil, as pictured below of our tomato plant.
In the picture above, the first tomato appears just below the middle right side of the plant. There are about 5 more smaller fruit in various places throughout this specimen. Although the tomato is not aquaponic, it is an experiment to expand our backyard to a sustainable farm opportunity. Stay tuned for more…