Check the listing for details. Magnavore PURA PhosLock 795g. Condition: New. Listed at 58.34 USD. For Reef, Marine, Planted, and Fresh Water aquaria! Unlike Alumina, PhosLock never leaches phosphates back to the aquarium. Unlike competing Alpha-Ferric Hydroxides, PhosLock never disintegrates and never turns soft and muddy in aquarium water.
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