King British Liquid Methylene Blue (May Vary) (3.9 fl oz)

King British Liquid Methylene Blue (May Vary) (3.9 fl oz)

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- King British Methylene Blue is a longstanding treatment for aquaria used by generations of fish keepers. - It is effective against a range of fungal & bacterial infections. - For use in coldwater and tropical aquariums. - One 3.5 fl oz bottle will treat up to 1800 pints of tank water. - Size:3.9 fl oz