The Center for Tropical and Subtropical Aquaculture (CTSA) is one of five regional aquaculture centers in the United States established by the U.S. Department of Agriculture. The regional aquaculture centers integrate individual and institutional expertise and resources in support of commercial aquaculture development.
CTSA was established in 1986 and is jointly administered by the Oceanic Institute and the University of Hawaii. The CTSA administrative office and staff are located at the Oceanic Institute’s Makapu’u Point site on windward Oahu.
A closed hydroponic sytem of mangrove probably desalinates the liquid media.
or make it kess saline, an it can be used for other plants.
No, that is not a correct assumption. Halophytic species deal with the salt in different ways. Some sequester it in non-fruiting and non-reproductive parts of the plant, but then when the plant dies or drops those leaves it falls back into the water. Some of them simply secrete it from the undersides of leaves and it forms a crust on the ground under them. Some of them simply tolerate higher salinity in the water and don’t change it at all. The book I posted above (correction: Saline Agriculture in the agriculture thread) deals with a lot of that, and is available in PDF form free at the link. I suggest reading it first.
Good to know. Thank you for your observation. Reading first always.
MyAquaFarm.com installation video
Guy sells out-of-the-box 16 square foot aquaponic grow beds that operate on 25W and can handle 25-30lbs of fish and a large amount of plants.
Another DIY modular aquaponics system
Another guy growing tilapia and produce using aquaculture. Produced over 100lbs of fish in 5 months and has recently added strawberries, cucumbers, peppers, and tomatoes to the system.
What’s his bill for fish food? And what can a seastead feed the fish for same growth?
Well, 100lbs for 5 mo is 11 ounces per day, not counting the bits one (and one’s cats) doesn’t normally eat… good enough for a taste of fish without it being a main dietary item, assuming you get your protein elsewhere.
I had this idea, but it is undeveloped. To grow kelp in salt water.
Wash kelp with freshwater. To grow mushrooms or some micellious
fungi on the kelp. Killmall the fungi and kelp with heat sterilization,
grind it and feed it tonsalwater fish in cages in the middle of the ocean.
Solar power, solar cells, seawater destillation to get freshwater, and feed the
fish to feed the people. Idea outline.
An twenty characters
A few thoughts…
Most of the word of mouth on “Sweet Water Organics” is good, but they closed and defaulted on 1/4 $million loan, and weren’t paying what few employees they had. Why, for real, did the garden fold up? Did they charge so much for the food that no one could afford it? Were they unable to grow it at an affordable price? Did all the electricity used by those flourescent lites cost too much? This sort of data is needed to avoid making the same mistakes.
If the seastead is replenishing water for the farm with distilled and rain water, it’s going to be mighty short on minerals in the water. How can that be fixed?
Does anyone know how he is feeding the fish, and at what cost? Fish is a fine side effect for keeping the restaurant supplied with oil-free fish, and keeping the garden fed with nutrients, but at what cost? Sure a seastead should have the water storage tanks anyhow, so that’s not really a cost, but the fish food is a cost, and fish food costs more than plant food (a seastead can make free plant food), so what’s the fish-feeding costs? For a seastead, it must be lower than what people on youtube are paying.
There’s a number of youtube videos showing horizontal planter pipes and perfectly level beds of floating plants, but how can you use those on a floatie in the wave zone (no matter what it’s made of or how big it is), what with it bobbing around and sloshing the water all over the place? I am nixing sprayed root systems because of the energy to run the high pressure pumps, but dripping water may be workable.
Just located this report, dated 2012, on how it burned thru all the money, killed 1000’s of fish, and folded in 3 years. Their practice of dumping 1000’s of gallons of water per week isn’t workable on a seastead that must desalinate water. Etc, Etc… I am just saying that while there are correct ways to do these things, there’s people who do not have that data and are making many mistakes. Even their concrete tanks could have been killing the fish with lime leaching out.
Danish composite vessel specialist builder, Tuco, has introduced a new 14.99m catamaran workboat for the fish farm market.
The boat is designed for the fish farming industry where it will serve as a platform for work and crane operations. The unique construction has been tailored to fit the tasks in the industry and allows for heavy lifting. The tasks are diverse and include for example replacement of nets, feeding, underwater inspection, research, dredging, installation, repair and maintenance of structures.
The 14.99 metre ProZero catamaran is equipped with a ballast tank system in order to supply the inherently light vessel with the weight and hence stability necessary to counter any imbalances that may occur during heavy lifts at the breeding facilities. The heavy work includes replacement of nets on smaller cages and handling of heavy equipment. By utilizing the ballast system, the weight distribution can be easily adjusted to obtain the necessary stability. The operation takes just 6 minutes and the boat is ready for lifting.