JBL Ferropol Refill
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JBL Ferropol Refill sachet provides an environentally sound & coat effective way to supply essential minerals & trace elements to aquarium plants. The 625ml sachet will treat 2500 litres (555 gallons) of aquarium water & is exactly the same composition as the contents of the 100ml starter treatment pack. Simply fill up the 100ml container when empty from the refill sachet applicator.