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No external ballast required
Fritz Industries was the first company to pioneer commercial-scale cultivation of nitrifying bacteria
this product effectively supports the cycling process of new aquariums
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AA Green Killing Machine UV Sterilisers (9W / 24W) seachem No external ballast requiredInternal UV Sterilizer 9W & 24W Models Maintain crystal clear water in your aquarium with this Internal UV Sterilizer, designed to eliminate algae, bacteria, and harmful pathogens. Suitable for tropical , this submersible sterilizer features a powerful UV lamp, built in filter pump, and a safety approved transformer for efficient and safe operation. Key Features: Kills Algae & Bacteria UV radiation at 254nm wavelength effectively eliminates green