Korallen-Zucht Iron Concentrate – 50 ml

This pure iron concentrate from Korallen-Zucht feeds zooxanthellae and enriches coral coloration in nutrient-poor reef tanks.

For all kind of corals! Pure nutrition for zooxanthellae and all color ranges of your corals.

Indispensable in nutrient-poor tanks. In fact Iron is only available in minimal amount in saltwater, but it is permanently consumed and should be provided consistantly.

Our Iron concentrate is a very special product and the effect is shown rapidly. Well suited for all kind of corals. Recommended in all tank systems.

Dosing: normal stock 1 drop/100L/25gallons per day.This can be increased or reduced, according to the individual consumption in the tank. Watch the corals carefully: when the corals react with enhanced coloration stop dosing.

The previous dosing of 1 ml/wk/50g is also possible, but we prefer the new daily supply for the corals.

Compatibility

What it is. KZ's catalogue: improves all kinds of coral colour and can be used as a targeted colour enhancer for green-pigmented corals; it improves the growth and reproduction of zooxanthellae. The dosing guide calls it pure nutrition for zooxanthellae, and for all colours.

Where this sits in the Korallen-Zucht range. KZ build everything around four basis products — ZEOvit zeolite media, ZEObak, ZEOfood and ZEOstart — which together are the ZEOvit system. Everything else in the range, this product included, is a layer on top: colour products, problem solvers, and single elements. KZ's own guidance is that the products can each be used separately, without the complete ZEOvit system and without the other KZ products, but that the full effect in quality and colouration comes only from running the system.

No ozone and no UV while you are running the ZEOvit system. That is KZ's instruction, and the reason is the point of the system: ozone and UV destroy the microorganisms and elements the whole method depends on.

KZ's own target water parameters, for any tank running their products: calcium 400–410 mg/L, magnesium 1,260–1,280 mg/L, carbonate hardness 6.5–8, potassium 380–400 mg/L, salinity 33–35 ppt. They add a warning worth repeating: higher figures bring no advantage. Neither growth nor colouration in SPS corals is improved by pushing past these, and higher levels tend to have negative effects.

Dosage & Directions

Korallen-Zucht's own dose. 1 drop per 100 litres, twice a week.

Two dosing figures circulate for this product. The retail label gives 1 drop per 100 litres daily. Korallen-Zucht's own 2018 Easy Reefing guide gives 1 drop per 100 litres twice a week. Iron is a product where the corals tell you the answer — watch the colours and move slowly. Where the two disagree we print Korallen-Zucht's own, and if you are new to the product the lower rate is the one to start on — you can always dose more.

How and where it goes in. Directly into the tank, into the flow. All equipment stays running.

Start below the figure, not at it. KZ's own instruction for a first-time user, a lightly stocked tank, or a tank with little growth: reduce the dosage recommendation and adjust upward. Their words — do not act on the principle that the more the merrier.

Calculate on gross volume. KZ ask you to use the gross water amount for dosing arithmetic, not a net figure with rock and sand deducted.

KZ describe both the deficiency and the overdose. Too little iron and Acropora reds go pale rose while greens turn yellowish. Too much and yellows turn greenish. That is a usable feedback loop — adjust on what the corals do.

Freshness & Storage

Every batch we dispatch carries a minimum of 6 months' remaining shelf life. Store this product in a cool, dry place away from direct sunlight, with the cap or inner foil closed tightly after each use.

Backorder & Dispatch Timeline

This item is stocked to order. Back-orders are consolidated and placed with our overseas suppliers once a month, on the last day of the month, and all such orders are shipped before the 15th of the following month.

Back-orders cannot be cancelled once they have been placed with the supplier. If you cancel before that, payment-gateway charges of 2% plus GST are deducted and the balance refunded. In the rare case a supplier cannot fulfil the item, we will offer you an alternative first, and refund in full with no deduction if you would rather not take it.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number — or email us, if you would rather — and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 72 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.