Use of probiotics is an effective alternative sustainable source of beneficial microbes with bactericidal or bacteriostatic effect on pathogenic bacteria, with anti-bacterial, anti-viral and antifungal activity, and also having immune-modulatory capabilities. Efficient microbes in Hydrobac Aqua are developed to effectively proliferate in the aquatic environment and increase beneficial microbe community. Hydrobac Aqua contains specially formulated range of adapted highperformance microorganisms and micronutrients developed for use in the biological degradation of animal waste, unconsumed feed and other organic matter in aquaculture eco-system.