QUOTE(Michael J. @ Jul 19 2014, 02:54 PM)
Hi Icehart,
Do you mean on a hobby scale, or commercial scale?
I've done a small one on a hobby scale, using recycled materials. Mine was a vertical model, using a series of pvc pipes as troughs and plastic cups as growing containers. Didn't perform as well as expected from an economics point of view.
The key constraints were the variety of crops that could be grown under tropical climates were very limited. High valued crops, like salads, tomatoes etc. do not perform well under the high heat - high humidity conditions. Although the plants did grow quite nicely, they tended to yield poorly, eg. salads tended to bolt early and therefore become bitter, tomatoes flowered well, but the fruits were constantly attacked by fungus. Spraying fungicide was a problem because the system was exposed, meaning if I sprayed any chemicals, the fish will die from the poisons.
In addition, the fish species cultivated is also critical to the economic viability of the enterprise. Easy to grow species, like tilapia are not economical for aquaponics, because pond and cage raised fishes are not only cheaper in cost, but grow a hell a lot faster and better. This means that while an aquaponics system will be producing a crop of fish every 8 months or so, a pond of cage system would have already produced 1 harvest, and already getting ready for a second harvest. Pricier species, like Jade Perch would have been a better option, except that getting fingerlings is a pain and demand in Malaysia generally low.
Still, with technology getting more accessible and cheaper by the day, aquaponics in Malaysia might still be economically viable in the near future. For now, its value might be more contained to home-growers, rather than bulk production.
Here are a few blogs and websites that detail out small scale plus commercial scale units:
http://www.ecofilms.com.au/the-cost-of-com...ial-aquaponics/http://mahfudzaquaponic.blogspot.com/http://www.affnanaquaponics.com/2009/06/aq...w-to-start.htmlQUOTE(Michael J. @ Jul 19 2014, 03:00 PM)
ps: Forgot to mention some things... while I've found that aquaponics systems do not work well for shorter term crops such as vegetables, fruit crops such as melons seem to do well. Back in Sepang they had a system that grew Golden Melons on aquaponics/fertigation system, and it yielded fantastically well. But they only ran it for 2 seasons, then shuttered the whole project. Dunno why, maybe they couldn't recoup the costs quick enough...
Nonetheless, if you are keen about aquaponics as a commercial enterprise, do not make the same mistakes I did by growing leafy greens and vegetables... the prices are too low to justify the system. Go with things like melons or pumpkins.
Wow, didn't expect such a good lengthy input from you.
Will study through the links and the overall feasible of aquaponics farm here in Malaysia.
I hope you don't mind me asking few questions in the future via PM.