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sulfur pearls consist of pure sulfur. In the sulphur nitrate filter they are used as a substrate... more
Product information "sulfur pearls 1 l"
sulfur pearls consist of pure sulfur. In the sulphur nitrate filter they are used as a substrate and energy source for the bacteria. They are decomposed by the bacteria and must be refilled regularly. Caution: Only use in slow-running anaerobic filters for nitrate decomposition.
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