Korallen-Zucht Seawater Complex Concentrate – 1000 ml

Korallen-Zucht’s Seawater Complex Concentrate combines nearly every trace element corals need, from strontium and iodine to manganese and zinc.

Combination of nearly all trace elements used and required by corals as far as our experience has shown.

Contains strontium, barium, magnesium, iodine, bromium, fluorine, manganese, chromium, copper, nickel, potassium, zinc, lithium, boron, cobalt, rubidium, but no calcium, carbonate, iron.

Highly concentrated, do not increase dosing recommendation on the label.

Dosierung: 1ml per 100L / 25 gallons daily

Part of maintaining stable reef chemistry — see our guide to Calcium & Magnesium for how this product fits into dosing a reef tank.

Compatibility

What it is. A trace element mix for reefkeepers who are not running ZEOvit. Bulk Reef Supply list what is in it: strontium, barium, magnesium, iodine, bromine, fluorine, manganese, chromium, copper, nickel, potassium, zinc, lithium, boron, cobalt and rubidium — and no calcium, no carbonate and no iron. KZ's dosing guide calls it a trace element mix for all kinds of corals.

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.

Do not use it with the ZEOvit system. That is Bulk Reef Supply quoting KZ directly: this product was developed for reefers running other systems. If you are on ZEOvit, the trace element product is ZEOspur 2.

KZ also mark it as not one to combine with the Coral System 1–4 programme.

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.

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.