King British Methylene Blue 100ml


4 in stock

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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 & tropical aquariums. One 100ml bottle will treat up to 900 litres of tank water.

Active Ingredient: Contains: Methylene Blue 2.44% w/w.


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