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For those passionate about aquariophily
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Analysis
Analysis / Tests
Basin Analysis
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Balling Products
Seawater supplements
Basic elements
Fresh Water Supplements
CO2 system
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Water treatment
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Adverse Treatments
Fish Care
Water treatment
Bacterial Treatments
Adverse Treatments
Fish Care
Water treatment
Bacterial Treatments
Fish Care
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Seawater Food
Fresh Water Food
Food Basin
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Sand
Substrate for reactor
Sea Salts
Sands / Quartz / Substrates
Remineralizing
Pond Substrate
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
Seawater Equipment
Freshwater Equipment
Basin Equipment
5€ discount for your first order with the code: BIENVENUE05 (from 100€ purchase, offers cannot be combined)
ATI Labs - Magnesium is a high-purity solution designed to effectively stabilize magnesium in reef aquariums. Developed and 100% controlled in Germany by ATI Laboratories, this solution ensures precise supplementation to maintain optimal ionic balance, essential for good coral health. Each bottle contains 100,000 mg of pure magnesium , ideal for daily use or to correct a deficiency detected by ICP analysis. Thanks to its excellent quality/price ratio , transparent traceability and compliance with the strictest European standards, it is a reliable choice for demanding aquarists, from beginners to experts.
Order it before
15:00 tomorrow
and receive it
on
Friday, January 30, 2026
with
Chronopost - Livraison express à domicile
Magnesium plays an absolutely central role in seawater chemistry. Too often overlooked, its level directly impacts the stability of alkalinity and calcium . If magnesium drops, these last two elements can precipitate, making their absorption by corals much more difficult. The result: slowed growth, a weakened skeleton, degenerated soft corals and even the absence of coralline algae on live rocks. In short, a silent but formidable imbalance.
The ATI Labs Magnesium solution helps to address this deficiency in a controlled manner. Each milliliter increases the magnesium concentration by 1 mg/l per 100 liters of water . It is recommended not to exceed 100 mg/l increase per day , or 100 ml per 100 liters, to avoid sudden variations. The generous 1000 ml bottle allows for correction over several weeks or even months depending on the tank's needs.
Whether it's to compensate for high consumption by calcifying corals (especially SPS and coralline algae), or to correct an imbalance caused by too little salt, this solution does the job perfectly. And like all products in the ATI ICP Elements range, it benefits from color-coded identification according to the level of mastery: perfect for those who want to dose without making a mistake.
Finally, its development strictly follows the European CLP regulation (EC No. 1272/2008) and it is registered with ECHA, which guarantees maximum safety for fauna, flora and the environment . Real peace of mind for all reefers who only want the best.
This SALIFERT brand analysis kit allows you to accurately measure the magnesium level of your seawater. Allows you to take around 50 measurements.
This analysis kit from the SALIFERT brand allows you to measure the Kh of your seawater with precision. Allows you to take 100 to 200 measurements.
This SALIFERT brand analysis kit allows you to accurately measure the calcium level of your seawater. Allows you to take 50 to 100 measurements.
Accurately tests the phosphate level of your seawater.
Allows you to take around 60 measurements.
Instructions in French
AF Amino Mix 50ml from Aquaforest is a concentrated amino acid supplement for corals . It increases the intensity of colors and the resistance of corals to diseases.
Seachem 's Reef Phytoplankton is a marine green and brown phytoplankton concentrate designed to provide fatty acids, proteins, vitamins, essential amino acids, along with organic carotenoids for invertebrate nutrition.
ATI Labs - Vanadium 150 ml is a highly purified solution designed to restore and maintain optimal vanadium levels in reef aquariums. Although often overlooked, this trace element plays an important role in coral coloration and sponge development . Deficiencies may go unnoticed, but their effects are very real: dull hues, slowed growth, less active sponges... Thanks to its concentrated formula from ATI laboratories in Germany, each milliliter allows for precise and controlled correction, in complete safety. Perfect for those who want to push precision even further with the support of an ICP analysis.
ATI Labs - Nickel is an ultra-pure solution designed to correct nickel deficiencies in reef aquariums. From ATI Laboratories in Germany, this 150 ml supplement fits perfectly into a fine-tuned and controlled approach to water chemistry. Although nickel is not strictly essential, it plays a subtle role in certain enzymatic activities of nitrifying and nitrogen-fixing bacteria . This bottle contains 45,000 µg of pure nickel, allowing for precise adjustment of values according to ICP recommendations. Perfect for advanced aquarists who want to go even further in optimizing their tank.
ATI Labs - Manganese 150 ml is an ultra-pure solution specially formulated to correct manganese deficiencies in reef aquariums. This discreet but essential micro-element is directly involved in the photosynthesis of zooxanthellae and plays a role in the intensity of colors, particularly in SPS corals . A lack of manganese can result in dull hues, slowed growth or reduced vitality. This highly concentrated supplement allows for ultra-precise dosage, suitable for demanding aquarists or those using ICP tests. It is 100% produced and controlled in Germany by ATI , for impeccable purity and traceability.
ATI Lithium 100ml from ATI , lithium helps produce brighter corals in your aquarium.
ATI Labs - Iodine 1000 ml is a highly purified supplement designed to maintain optimal iodine levels in reef aquariums. A key element for the health of corals, shrimp and fish, iodine is involved in pigmentation, immunity and even molting in crustaceans. A lack of iodine can quickly result in dull colors, fragile tissues or molting problems . This concentrated bottle allows for simple and precise adjustment, while integrating perfectly into your daily routine. Produced and controlled in Germany according to European standards, this solution guarantees a reliable and safe supply , essential for demanding aquarists.
Cobalt is one of those trace elements that is rarely discussed, but which makes all the difference in a well-balanced reef aquarium. With ATI Labs Cobalt 150 ml , your corals will regain striking color intensity, healthy growth and increased vitality. This product offers an ultra-pure solution , perfectly dosed to compensate for invisible but critical deficiencies. Ideal for ICP analysis users, it guarantees a regular and controlled supply of cobalt, without the hassle. Produced and controlled in Germany, this supplement is designed in compliance with the strictest European standards. A must-have for any demanding reef keeper.
ATI Chrome 100ml from ATI , chromium can help improve coral coloration and health.
ATI Brom 1000ml from ATI , bromine is used in certain corals for the synthesis of chromoproteins and for the construction of the skeleton .