Commercial aquaculture has now integrated with hydroponics to create a budding new commercial industry.I,m seeking to curate fish species suitable that get along well with this vegetable/fruit growing systems.Aeroponics is yet another branch of this new farming technology.Clean green obviously ramifications for future feeding of the planets communities~
If you are handy, you can build your own tank out of plywood using sealants and/or a pond liner. You can get creative with materials and with designs. John Kohler, of Growing Your Greens, gives us a walkthrough on a sweet DIY fish tank on his Youtube channel. This tank was built using just 2x4 lumber and a special seamless coating. Tune in at minute 15:30 to get right to the DIY goodness. There may be a size limit to how big you can build using your own materials. You may choose a long, trough like design to help keep things manageable. The difficulty is to build a large enough tank while eliminating leaks and weak points.
A very comprehensive budgeting tool that has a total of 16 integrated pages/sheets allowing for the planning of every possible variation to your proposed farm. The tool comes with hypothetical numbers inserted, working formulas ready for you to go through and work the variations for your farm project. Find out if it is really going to work for you before you shell out tens of thousands on equipment and labour to build your farm. Insert numbers that you have gleaned from your market research to get a real life scenerio for your particular location.
The fish in this Aquaponic system are Jade Perch which are about 9 months old. Jade Perch have quite a small mouth and once they have reached a size larger t...
Charlie Dare's insight:
Their comment is comprehensive ~Omega-3s are essential nutrients found in fresh, Australian JADE Perch a fish also suitable for RAS unlike their cousins Silver Perch having highest Omega-3 content of any farmed species~ They say... "The fish in this Aquaponic system are Jade Perch which are about 9 months old. Jade Perch have quite a small mouth and once they have reached a size larger than 10cm or 4 inches they are not considered to be cannibalistic. They are omnivorous fish, which means they require both protein and plant material in their diet. The plant part of these Jade Perch's diet consists of lettuce, spinach and wheat grass which all grow very well in the Aquaponic system and wicking beds. They absolutely love these young lettuce leaves so much so that they will leap out of the water to get at them! This is a great, cheap, healthy, fun way to feed your fish and also helps satisfy part of their dietary requirements. The aim is to experimentally grow and feed these fish home grown foods only (no fish pellets that cost extra money) such as lettuce, spinach and wheat grass and monitor their progress. " For more info on Jade Perch click the links below: http://www.jadeperch.com/
Modest levels of nitrate nitrogen – in the 75 to 100 mg/L range – may be more harmful to aquaculture-raised rainbow trout than producers realize. A team of scientists at the Conservation Fund’s Freshwater Institute led by John Davidson documented deformities and significant behavioral changes in rainbow trout (Oncorhynchus mykiss) raised in recirculating aquaculture systems (RAS) with nitrate nitrogen concentrations at levels less than one-tenth the recommended maximum nitrate nitrogen level of 1,000 mg/L. They believe the changes were spurred by chronic exposure to nitrate nitrogen.
Regenerative medicine could one day allow physicians to correct congenital deformities, regrow damaged fingers, or even mend a broken heart. But to do it, they will have to reckon with the body’s own anti-cancer security system. Now UCSF researchers have found a human gene that may be a key mediator of this trade-off, blocking both tumors and healthy regeneration.
As a child, UCSF’s Jason Pomerantz, MD, was amazed by the fact that salamanders can regenerate limbs. Now, as a plastic surgeon and stem cell researcher, he believes that insights from creatures like zebrafish and salamanders, which routinely regrow damaged tails, limbs, jaws and even hearts, may one day endow humans with heightened regenerative abilities.
“In the last 10 to 15 years, as regenerative organisms like zebrafish have become genetically tractable to study in the lab, I became convinced that these animals might be able to teach us what is possible for human regeneration,” Pomerantz said. “Why can these vertebrates regenerate highly complex structures, while we can’t?”
In a study published Nov. 17, 2015, in the journal eLife, Pomerantz and his team showed new evidence suggesting that mammals may have given up the ability to regenerate limbs partly in exchange for advanced cancer-fighting genes.
The question of whether the regenerative powers of zebrafish and salamanders represent ancient abilities that mammals have lost, perhaps in exchange for advanced tumor-suppression systems remains an open question for biologists. Most tumor suppressor genes, being extremely useful for preventing cancer and for forming tissues during development, are broadly distributed and conserved across many different species. Recent studies, however, suggest that one, the Arf gene, arose more recently in the avian and mammalian lineage, and has no equivalent in the genomes of highly regenerative animals.
To explore whether this gene might play a role in preventing tissue regeneration in humans, the researchers added human ARF to the zebrafish genome and assessed how it affected the fishes’ normal ability to regrow damaged fins after injury. They found that human ARF had no effect on the fishes’ normal development or response to superficial injury, but when the researchers trimmed off the tip of a fish’s tail fin, the gene became strongly activated and almost completely prevented fin regrowth by activating a conserved tumor-blocking pathway.
“It’s like the gene is mistaking the regenerating fin cells for aspiring cancer cells,” said Pomerantz, who is an associate professor of plastic and reconstructive surgery at UCSF and surgical director of the Craniofacial Center at UCSF’s Medical Center and School of Dentistry. “And so it springs into action to block it.”
It’s remarkable that ARF can so readily integrate itself into the fish’s existing tumor-blocking pathways, Pomerantz said.
Researchers at Washington University in St. Louis (WUSTL) have used zinc oxide and titanium dioxide nanoparticles to boost the tomato plant's ability to absorb light and minerals, resulting in significantly more fruit by weight.
eFishery hopes to alleviate environmental waste problems associated with overfeeding on fish farms. Its smart feeding device works by detecting hungry fish behavior and dispensing the proper amount of feed.
Charlie Dare's insight:
As fish feed amounts to a big cost of production this gizmo senses the fishes activity and hunger level as a smart feeding device and limits overfeeding ~
The course is designed for professionals actively involved in water quality monitoring and management. They may be working e.g. for environmental agencies, consultants, as environmental or water management officers in local, regional or national governments, as staff of NGOs, or as junior university lecturers, and may not have the time to undertake a course that lasts several weeks abroad.
Upon completion, the participant should be able to:
understand and apply concepts of water quality and pollution processes in rivers and lakes;understand and apply the different steps of the monitoring cycle in rivers and lakes;understand the basic concepts of groundwater quality and monitoring;apply common statistical techniques for water quality data evaluation;design sound and sustainable freshwater quality monitoring and assessment programmes under specified conditions. Participants complete the course in a period of 4 months with a workload of 140 hours. A participant is expected to spend about 8 hours a week on average through reading, discussion and assignments. The course is sub-divided into 4 subjects and a written assignment. Within the course, each subject starts and ends on a specified day. Each subject takes 2-4 weeks. Within this period, the participant is free to study in his or her own time. Questions with regard to the subject can be posted on the discussion forum, eliciting responses from fellow participants. The teachers also regularly comment on the questions posted on this forum. Start: 01 September 2015 End: 08 January 2016 Deadline IHE application: 01 September 2015 - 23.59 (CET) Deadline NFP: 15 March 2015 - 23.59 (CET) Course fee: € 725
Another valuable course for those involved in growing fish as water quality is particularly important for growing species like Trout.Taste of fish also is a big factor between getting a decent price or ruining the reputation of a species for all those that taste/waste money on a off flavoured fish~ This happened at function at Sydney Fish Market giving away samples to visitors who deposited the free samples in the nearest bin, never to buy again.I not mention the species because more reputable growers purge their stock to rid the off flavour~
The most common off-flavour compounds found in cultivated fish are 2-Methylisoborneol (2-MIB) and geosmin (GSM), which are secondary a blue green algae~Rapidly taken up by gills of fish (hrs) but days of purging with a slight weight loss with out feed make them much more palatable.I,ve added salt to fresh water too as it acts as a prophylactic to help stressed fish from getting other fungal/disease problems~
"The course in a period of 4 months with a workload of 140 hours. A participant is expected to spend about 8 hours a week on average through reading, discussion and assignments. The course is sub-divided into 4 subjects and a written assignment."
There are 3 steps to sizing a pump for aquaponics or hydroponics: calculate GPH (using the formula here), measure head height, and combine using the chart.
Charlie Dare's insight:
For an efficient system you need the right sized pumps with a bit more capacity than you,ve measured in volume and head.Flow meters can also be useful to increase flow for species like trout that have a high oxygen requirement.Handy to have a DO(Dissolved Oxygen) meter if any number of fish.I havn`t bought from this site and found YouTube videos saying fence post covers are a fraction of the price this group sells similar as vertical towers. I`m merely picking out useful information from various Aquaponics supply marketers not endorsing one over another or theirs systems~ I believe an integrated system has overall benefits.Increasing the amount of vegetables grown as some root types,tomatoes fruiting types, grow better in a medium ,while others,leafy (lettuce ) are suitable for towers or rafts like Kale a good one in them ~
Abstract: The water recirculation techniques used for aquaculture is not only the way forward in countries where environmental conservation is highly emphasized; the technique is also used to secure a [...]...
Interesting light set ups and spectrum discussions~ Red and blue LED`s to change taste of plants and growth rates~ Shows size and taste differences possible like for a spicy mix in lettuce and other plants~
Photobiology discussions and information like the ideal distance from plants about 2 feet with LED`s ~Higher reds produce stretching for flowers or cuttings.Blue for high veg of a mothering plant then switch color to red for clones, adjust higher to stretch before cuttings ~
AQ1 started development of IR sensors for waste feed detection and feeding control in sea ...
Charlie Dare's insight:
Biggest cost is feed and over feeding not only wastes money if fouls water quality..Another sensor designed system to help overcome this.Trained experienced personal observation is best but not always available~
Murphy`s Law just when you think everything is under control something happens..A power out ! Always plan for contingencies to back up all systems power, water, oxygen as you have to drive a living system for both fish and vegetable matter no simple matter and keep their living parameters with in a safe range to maximize growth and health~This guy Paul I have immense respect for and still do not wish to cause or add to internal industry rivalry by advocating one proponent over another~ None the less by posting from a source regularly it may well be assumed some special preferences~
2.9.14 – Aquaponics pioneer raising freshwater lobster, year-round vegetables | The Star Press | http://thestarpress.com – Indiana man looking to market commercial scale aquaponics greenhouse system developed in his garage.
Charlie Dare's insight:
Yabbies in Australia a very tasty little fresh water critter.Many different varieties endemic to different regions
This is a 12-day intensive course delivered by six leading researchers in aquaculture, biomedical sciences and marine and environmental sciences. It is being held at the James Cook University, Townsville, Australia from 11-23 January 2016. The course fee is AUS$ 3000 which includes accommodation, breakfasts, lunches, all tuition, materials and transfers.
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