Normal seawater is used in the tanks. But before seawater is used in the recirculation system it must undergo some primary treatment to ensure that it is free from any pathogens, which may be harmful to the seahorses.
The raw seawater is first pumped through a series of sand filters, which reduces the size of suspended particles in the water to 25 microns. It then passes through a series of cartridges, which then in turn filter the water down to 20, 10 and 5 microns.
The water is then passed through a heat exchanger to bring the temperature of the water from ambient up to the correct culture temperature for the seahorses.
The next and final stage of the process is to pass the seawater through an Ultra Violet (U.V.) filter, which then kills any bacteria, which may be present. If there are any suspended solids present, they will offer shading to the bacteria enabling them to evade treatment. Hence, the requirement for the initial filtration system.
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