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15 Φεβ 2012 · Use of Granular Ferric Oxide (GFO, or iron oxide hydroxide) is a popular and effective means to reduce reactive phosphate (a non-metal) concentrations in aquaria hence reducing the potential for algal growths. Silicate (a metalloid) is also efficiently removed.
15 Οκτ 2010 · Aquarium Chemistry: Regeneration of Granular Ferric Oxide Media with Sodium Hydroxide - For aquarists who keep non-photosynthetic corals that require massive feeding, have large tanks, or a dense fish population the costs of regular GFO replacement can be significant.
2 Νοε 2021 · GFO or Granular Ferric Oxide is designed to remove phosphate from the aquarium water. It can be used as a tool or treatment to lower elevated phosphate levels but is also safe for everyday use in aquariums with a heavy bioload where phosphate levels cannot be managed by other means of filtration.
This effect is the primary reason not to use unchelated ferric salts as iron supplements in marine aquaria, but that's a story for a different article. At the other end of the extreme of iron (III) oxides and hydroxides is the dehydrated form ferric oxide, Fe 2 O 3 .
14 Σεπ 2016 · GFO, which stands for Granular Ferric Oxide, is a red brown powder that is compacted into granules. The purpose of granular ferric oxide is to inhibit algae growth by removing phosphates from the aquarium. Maintaining low phosphate levels will help prevent algae outbreaks and control growth.
26 Ιουν 2019 · There are several different methods for dealing with phosphate levels but one they I like is using granulated ferric oxide (or GFO) in a media reactor. GFO is best used with a media reactor for several reasons. First, it is a very fine media and would easily escape from any bag you put it in.
7 Νοε 2012 · GFO or Granulated Ferric Oxide is used in aquariums for removing phosphates. GFO is efficient in doing this by chemical reaction in which phosphate combines with the GFO, removing it from the water column.
