Using LED lighting to improve fish growth

13 April 2021
An artist’s rendering of how a solar fish farm may be deployed. Source: Signify

To demonstrate that grow lights in fish farms help to increase fish productivity and efficiency, researchers at South China Agricultural University have conducted a trial of commercial size tilapia using 60 solar luminaires in a 7,000 sq m pond using light emitting diodes (LEDs) from Signify.

The result of the tilapia farm trial confirmed an increase in fish growth and a 10% reduction in feed conversion ratio (FCR) — meaning farmers need less feed per fish.

Only one of Signify’s Philips solar fish grow lights is required per 100 to 150 sq m of pond surface and they can be evenly spaced in the pond, attached by a rope to the center line or to each other to keep them in place.

The trial took place at the tilapia farm in Taishan, Jiangmen, Guangdong in south China and proved that the lighting also had a positive effect on water quality. The trial lasted 117 days and resulted in an additional 1,770 kg of tilapia that was harvested compared to similar ponds without the LED lighting.

Signify said it develops its fish lighting in collaboration with leading universities and institutes and test the lighting under tough conditions.

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