Patent ID: 7140323

Claim:
A method of reducing the level of bacteria of the species Vibrio and viruses selected from the group consisting of White Spot Syndrome Bacilovirus (WSBV) complex, Yellowthread Virus, Taura Syndrome Virus and combinations thereof in a volume of water during aquaculture, which method comprises: (a) providing the volume of water to be stocked with farmed crustacea or eggs thereof; (b) prior to the stocking, introducing into the water an aqueous solution of glutaraldehyde in an amount such as to provide in the water from 0.5 to 2 ppm of glutaraldehyde; (c) stocking the water with the farmed crustacea or eggs thereof at a time when the concentration of glutaraldehyde is 0.5 to 2 ppm; (d) allowing the farmed crustacea or eggs thereof to grow; and (e) optionally during a period of the growth, introducing into the water at least one further portion of an aqueous solution of glutaraldehyde in an amount such as to maintain the concentration of the glutaraldehyde at 0.5 to 2 ppm.