Korallin S-Plus 500 mL

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For over a decade, KORALLIN has supplied equipment to the private marine aquarist and zoological gardens around the world. Our equipment has significantly and effectively assisted them in the care, maintenance and growth of both invertebrates, fish and macro algae (e.g. calcareous algae)

It is often overlooked that important micro-nutrients (such as iodine, iron, manganese, strontium, molybdenum, fluorides, rubidium, and lithium) are rapidly depleted or used in a closed system such as a fish tank. These trace nutrients are important ot the health of every fish-tank and some, such as Iodine can be completely removed within as little as two weeks.

It is not always possible to replace these nutrient is sufficent quantities through water changes alone. For example, a five percent water change will only replace 5% of the Iodine required in a closed system. To replace sufficient Iodine would require 20 times as much water to be changed, obviously not a reasonable solution.

KORALLIN trace elements replenish over 20 of these missing live supplements in a balanced and easily absorbed form. Regular addition will promote healthy and vigorous growth of both calcareous algae (e.g. Halimeda) and invertebrates using symbiotic algae in their tissues, especially hard corals and clams.

KORALLIN S also contains strontium in for the care and growth of hard corals. Strontium is a important element for the formation of their skeletal structure. KORALLIN S is also avaiblable with additional multivitamin-complex and a pH-buffer integrated in KORALLIN (S) PLUS .

With KORALLIN, macro-algae (coralline algae, Halimeda etc.) are are able to grow exteremly well. Sessile invertebrates can also show decisive greatly improved growth rates with regular use of KORALLIN.

Absorbable vitamins A, D3, E and C found in KORALLIN PLUS help to strengthen immune systems and prevent diseases the appearance of disease. As the fish `drink` the solution, they too benefit from the nutrients contained in KORALLIN PLUS. Regular use can result in magnificent growth of macro-algae and invertebrates with symbiotic algae displaying greater health KORALLIN trace elements can also be used with reverse osmosis water to replace the desireable elements that are stripped from the water during the osmosis process.

KORALLIN trace elements are supplied in 500ml bottles. Standard dosing rates are 20ml per 30 Gallons each week. This can be halved in the absence of protein skimming and activated charcoal usage.

S-PlusTM replenishes vital trace elements that are needed for the thriving of corals (soft & hard), Giant Clams, calcareous algae, crustaceans & fish in reef aquarium.

Unlike other incomplete supplements, S-PlusTM contains more than 20 essential micro-nutrients like iodine, iron, manganese, strontium, molybdenum, fluorides, rubidium, lithium, etc. in the right proportion and in absorbable form. Enhanced formula also integrates multivitamin-complex and pH-buffer to ensure splendid health, vigor & coloration.

Unlike other uncontrolled `full spectrum` supplements, elements in S-PlusTM are complexing agents so they are only freed depending on the complex formation constant and are laced again if no utilization occurs. In other words, S-PlusTM can sense if certain trace elements are used up and will replenish these missing elements only. All others will be laced back into its matrix and vanished after one week, enabling a very intelligent & automatic metabolizing mechanism.

  • Stabilized iodine is available in biologically potent form
  • Concentrated strontium is crucial for the skeletal formation of leather & hard corals
  • Controlled-release EDTA iron to stimulate growth of invertebrates and macro algae
  • Use w/ Mineral-PlusTM to revitalize RO/DI water, to maintain alkalinity & to stabilize pH
  • Use w/ KORALLIN Kalkreaktor for a synergistic calcification for corals & encrusting algae
S-PlusTM prevents trace elements depletion due to living organism utilization, protein skimming, ozone, resin and activated carbon filtration.

Directions: Use 20 mL (2.5 capful) / 30 US gallons weekly. Use 1/2 for system without protein skimmer and activated carbon. Refrigerate after opening. Imported from Germany (500 mL & 5 L).

CAUTION: Not for human consumption. Keep out of reach of children!

What`s so unique about S-PlusTM?
You may think that this is just another `All-In-One` supplement? Not really, S-PlusTM is safer yet more sophisticated than other similar products on the market today. First of all, S-PlusTM has over 20 trace & minor elements + multi-vitamin complex + pH buffer to assure a stable dKH & pH. The ONLY other element that you will need is Calcium. So, use S-PlusTM with a Kalkreaktor for a COMPLETE marine reef / fish replenishment. Secondly, you can not overdose if you follow the suggested dosage. Let`s say you have a crustacean species aquarium and they deplete your water of Iodine (for molting), S-PlusTM can sense the low Iodine concentration and will then react automatically by freeing its Iodine to replenish the missing quantity. Other elements like Strontium will NOT be freed if the existing level is considered optimum. The non-utilizable excessive elements will be complexed back into a matrix and be vanished completely after 1 week. Natural sea water composition has been `programmed` in S-PlusTM such that it is triggered by the deficient elements only. This automatic mechanism renders it an `Artificial Intelligence In a Bottle`! Other full spectrum replenishers simply replenish trace elements `blindly` so the they end up being wasted or end up intoxicating your delicate marine life.

Product Manuals & Documentation

Korallin S-Plus 500 mL

Owner's Manual available for download in Adobe PDF file format

Manufacturer Info

Korallin is a German based company who is a manufacturer of specialized aquatic components and accessories for the advanced marine aquarist.



Experience Level: Beginner


I have heard great things about this stuff!! We will see if it continues!!

0 out of 1 found this review helpful

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Experience Level: Intermediate

korallin s plus 500 ml

have found this product excellent. corals are in full bloom. great product.

2 out of 2 found this review helpful

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Experience Level: Expert


exellent, good aditive, splendid health and coloration., easy to use....

3 out of 4 found this review helpful

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Mark Chimo from

Tried them all!

I tried Vital Gold, Combisan, and Biotrace. Only Korallin S-Plus has given my reef positive results, however Vital Gold was a close second. Excellent product with excellent results.

6 out of 6 found this review helpful

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Mark Wuestenberg from

Overflows protein skimmer

Whatever is in this stuff I have to shut down the protein skimmer for hours, for it overflows. Nothing else I have used has done that. Put S-Plus in once a week as Korallin say's to do.

9 out of 9 found this review helpful

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