Brightwell Aquatics FerroxiPhos-G, Granular Ferric Oxide for Phosphate Control in all Marine & Freshwater AquariaPhosphate, while required in miniscule amounts by living organisms for proper functioning, can indirectly negatively impact the overall appearance of an aquarium system if it is allowed to exist at a concentration measurable by most aquarium test kits (e.g. >0.05 ppm); in order for this impact to occur, other undesirable substances must be present in varying concentrations, however these substances are rarely limiting in the typical marine aquarium. Because of this, elevated phosphate concentrations, whether sporadic or chronic, should be combated. FerroxiPhos-G provides a solution to elevated phosphate concentrations by binding the reactive (“free”) form of the molecule and making it unavailable for biological uptake. This method of treatment may be used as needed and/or on a continual basis to maintain an immeasurable phosphate concentration in a marine aquarium. FerroxiPBrightwell Aquatics FerroxiPhos-G, Granular Ferric Oxide Media, 600 gr.OverviewDirectly and efficiently removes reactive phosphate from aquarium water.Also removes silicate and phosphate-based organic material from aquarium water, often resulting in improved water clarity (particularly in aquaria with heavy bioloads).Safe for use in all freshwater and marine aquaria, including planted and reef systems.Technical BackgroundPhosphate, while required in miniscule amounts by living organisms for proper functioning, can indirectly negatively impact the overall appearance of an aquarium system if it is allowed to exist at a concentration measurable by most aquarium test kits (e.g. >0.05 ppm); in order for this impact to occur, other undesirable substances must be present in varying concentrations, however these substances are rarely limiting in the typical marine aquarium. Because of this, elevated phosphate concentrations, whether sporadic or chronic, should be combated. FerroxiPhos-G provides a solution to elevated phosphate concentrations by binding the reactive (“free”) form of the molecule and making it unavailable for biological uptake. This method of treatment may be used as needed and/or on a continual basis to maintain an immeasurable phosphate concentration in a marine aquarium. FerroxiPhos-G also binds phosphate-laden organic dissolved material, including molecules that discolor water, as well as silicate. While FerroxiPhos-G provides a workable solution to potential phosphate-related problems, it should not be seen as an alternative to proper and sensible aquarium husbandry. Aquaria with extremely-low to immeasurable reactive phosphate often appear more pristine than those in which phosphate is allowed to persist in an elevated concentration. Feeding aquarium inhabitants sensibly, limiting the use of organic-based supplements and additives, use of a high-quality synthetic aquarium salt blend, and performing water changes/replacing evaporation with purified water are all important aspects of phosphate control. Additional means of limiting phosphate are maintaining a culture of macroalgae in the system to naturally deplete phosphate and other substances, and/or the use of an effective and well-maintained protein skimmer.Instructions and GuidelinesFerroxiPhos-G should be housed in a media reactor, canister filter, or fluidized-bed reactor with a means of controlling water flow through the media bed, and with a pre-filter in place to restrict particulate material from entering the reaction vessel. Follow the reactor manufacturer’s recommendations for water flow rates. Moderate water flow will discourage the accumulation of latent organic material in the media bed, itself, and will improve overall results. Prior to use, rinse media in sufficient freshwater to rinse any fine particulates away; discard the rinse water. When using in reef or planted aquaria to which no previous phosphate-adsorption media has been administered, it is recommended th