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Description
SEACHEM Flourish Iron
SEACHEM Flourish Iron is immobile in plants. This means that plants cannot divert iron from older leaves to new ones. Therefore, deficiency symptoms appear first on new or young leaves. Because plants use iron to produce chlorophyll, a lack of iron results in chlorosis, or yellowing, of the younger leaves. Stems may also appear short and slender. If the deficiency is severe and prolonged, each new leaf emerges lighter in color than the preceding leaf.
When choosing an iron supplement, it is important to know the distinction between the two forms of iron. The iron will be in one of two oxidation states: ferrous having a +2 charge, or ferric having a +3 charge. Ferrous iron, the preferred iron form and is soluble in water at any ph. Ferric iron, however, is only soluble below a pH of around 5.5; but if the pH is higher than 5.5, which more than likely it will be in a planted aquarium, the ferric iron will become insoluble and precipitate, settling in the root zone. Once this occurs, foliar absorption becomes impossible.
To overcome this precipitation, competing products employ a chelate of ferric iron: iron-EDTA. While this does keep it soluble, it has a couple of drawbacks with respect to foliar uptake of iron. (1) Iron-EDTA bonding is very strong, thus very little of the iron will be available to the plants over a given time frame and (2) Physiological energy must be expended by the plant in order to extract the ferric iron from EDTA-iron and then convert (reduce) it to the ferrous form. Our approach is different in that we use a complex (not chelate) of ferrous iron in Flourish Iron.
This fertilisers is a highly concentrated (10,000 mg/L) ferrous iron gluconate supplement. Plants are able to much more easily derive a benefit from Flourish Iron™ because ferrous iron gluconate is already in the ferrous form so they do not expend energy reducing it. Despite what other manufacturers may intimate, gluconate is not harmful to plants or fish. In fact, ferrous gluconate is better suited to foliar feeding than is iron-EDTA owing to the relatively weaker iron-gluconate bonding vs. iron-EDTA bonding. In addition, ferrous gluconate has the added bonus of being a source of carbon.
Additional Information
Directions
Use 1 capful (5 mL) for each 200 L (50 US gallons) or as required to maintain about 0.10 mg/L iron. For smaller doses please note that each cap thread is about 1 mL. Use MultiTest™ Iron test kit to monitor iron concentrations. Due to rapid utilization, test within 30 minutes. Use as needed to combat signs of iron deficiency (usually seen in new growth) which include: chlorosis (yellowing) of tissue between veins and short and slender stems.
Dosage
Considerations: We recommend maintaining an Fe level of about 0.10 mg/L. Iron is used quickly, so you will want to initially exceed 0.10 mg/L in order to prevent iron levels from falling below that level. To accommodate for its quick utilization, the standard of Flourish Iron™ dose will raise iron by 0.25 mg/L.
For smaller doses, please note that each cap thread is about 1 mL
Ingredients
Derived from: Ferrous Gluconate
Additional information
| Brand | |
|---|---|
| Aquarium Type | Freshwater, Planted |
| Weight | 250 ML |
FAQs
Why do I need to use Flourish Iron if I’m already using Flourish®?
A: Iron is an important nutrient in the planted aquarium. In order to maintain an adequate iron concentration it should be dosed on a fairly regular basis (daily). Flourish should be dosed less often (semi-weekly or weekly) since its components are not rapidly depleted. Daily dosing with Flourish can lead to unwanted algae growth. By having these supplements as separate products, the hobbyist can add Flourish Iron every day and not risk unwanted algae growth while still adding the necessary level of Flourish® on a less regular basis.
An hour after adding Flourish Iron to my aquarium I do not get a reading with my iron test kit. Are the plants using the iron or is it precipitating out somehow?
A: I am confident that the iron is being consumed. If it was precipitating out of solution, you would notice a white chalky haze to your water and a white colored coating to your aquarium walls, heater, filter, etc. Our Flourish Iron is a very different type of iron. Our's is bound to a carbohydrate that is very easily metabolized by your plants. Most of the others on the market are chelated iron supplements and your plants has to expend large amounts of energy to get the iron from the chelate to be able to use it.
When I add Flourish Iron to my aquarium within a few minutes the water gets very cloudy. What is causing the precipitation?
A: This is a peculiar response. Flourish Iron does not normally cause cloudiness unless used excessively, and even then the cloudiness is very mild. Since the cloudiness was caused by a white precipitate, as you confirmed by testing, it is not an iron precipitate. It is also unlikely to be a direct carbonate precipitate. I suspect that your water is exceptionally hard (contains a lot of calcium/magnesium) and that you may also have a high alkalinity (carbonate content), and that the addition of Flourish Iron (by an ion competing mechanism) pushes the calcium/magnesium carbonate in the water beyond saturation, resulting in the precipitation of calcium/magnesium carbonates. Even without the addition of Flourish Iron, do you sometimes see a white (chalky) film on the surface of the water? If so, that would support the presence of high calcium/magnesium. You may want to test your water for calcium/magnesium and alkalinity. If you experience problems growing certain plants, that may also suggest excessive hardness, since many plants prefer soft to only mildly hard water. Do you see any cloudiness when adding bicarbonate? If you have to frequently add bicarbonate, you may be using to much CO2. Regardless, however, I expect your calcium/magnesium hardness is the culprit. While this is nothing to panic about, if it should prove to be the case, I think you would do better to dilute out your water with some kind of soft water, such as DI, RO, or rain water.
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