Brightwell Aquatics Ferrion Concentrated Iron Supplement 250ml (Other Brands) (Marine Supplement)

$19.99 USD

Brightwell Aquatics Ferrion Concentrated Iron Supplement 250ml (Other Brands) (Marine Supplement)

Brand: Brightwell Aquatics
Product: Ferrion
Concentrated Iron Supplement for All Marine Fish & Reef Aquaria

Content: 250ml (8.45fl oz)

  • Highly-concentrated and stable iron solution for supplementing aquaria containing hermatypic organisms (i.e. “photosynthetic” or zooxanthellate corals, clams, and theirallies), macroalgae, coralline algae, mangroves, marsh grasses, and other desirable marine algae and plants.
  • Particularly suited to systems outfitted with a refugium or mud system.
  • Stronger than most competing products.
  • Composed of purified water and ultra-high purity materials.
  • Formulated by a marine scientist.

Technical Background

Photosynthesis is carried out within cell bodies known as Chloroplasts. Iron is utilized in the electron transport chain within the chloroplasts, and is therefore required by photosynthetic organisms for continued functioning and health. In marine aquaria, these organisms include macroalgae (such as Caulerpa, Halimeda, and Penicillus spp.), marsh grasses and mangroves, encrusting calcareous algae, and the symbiotic zooxanthellae and zoochlorellae that reside within the tissues of hermatypic corals, clams, and their allies, as well as in some sponges. In effect, the availability of iron becomes a limiting factor in the rate of photosynthesis, and hence the rate of nutrient uptake and growth, for these organisms. While each aquarium will require different concentrations of iron, a good place to begin is within a range of 0.05 - 0.10 ppm; this will generally provide sufficient iron for the photosynthetic organisms present in the system. Some aquaria may require, or benefit from, iron concentrations greater than 0.10 ppm, however greatly exceeding this level is not recommended. The best method of determining the optimal iron concentration for an aquarium is to begin at 0.05 ppm and then gradually (i.e. over a period of weeks) increase the concentration as warranted by the appearance of the aquarium. Phosphate is a substance that encourages growth of algae under the environmental conditions commonly found in marine aquaria, and overdosing iron in the presence of excessive phosphate may result in algal proliferation; for this reason, the concentration of phosphate in a marine aquarium should be maintained as close to immeasurable as possible.

The rate at which iron is extracted from the water is determined by the stocking density of photosynthetic organisms, type of lighting, and other conditions. Once the rate of iron uptake in the aquarium has been determined, the proper dosing rate of this product can be easily calculated.

Suitable for marine/saltwater aquariums.


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  • Brightwell Aquatics Ferrion Concentrated Iron Supplement 250ml (Other Brands) (Marine Supplement)

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