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A better way to do aquaponics
The traditional aquaponics single-unit system disadvantages the fish, the plants or both. Now might be the right time to rethink the design.
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Oxygen and stocking rates
Any viable tilapia grow-out system is dependent on adequate oxygen levels. As stocking rates and fish size increase, so too does demand for oxygen, and it is important to ensure adequate supply at all...
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Is farmed fish bad for you?
Sweeping claims about toxins contained in farmed fish, which are supposedly dangerous to human health, are unsubstantiated and false.
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Rating recirculating systems for tilapia
The efficacy of any recirculating system must be based on solid evidence and statistics over a full season.
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The stages of filtration – it’s all about balance
There are four key aspects of filtration, all of which are non-negotiable and integral to running a successful system.
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Generalist and specialist fish species
Not all fish species are suitable for aquaculture simply because they grow large in their natural habitat.
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The best tilapia for aquaculture
Riverine tilapia species are more suitable to South African aquaculture conditions than lacustrine species.
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How effective are recirculating aquaculture systems for SA?
The high cost of these systems can be prohibitive for new entrants to the industry. Pond farms may be a far better solution.
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Small community fish farms – then and now
Certain non-negotiable measures are needed to make small, community-run fish farms successful.
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How far have we come with aquaculture in SA?
This is the 100th aquaculture column to appear in Farmer’s Weekly, and to mark this milestone, I’d like to explore how far the industry has come since my first article in September 2012.
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