Aquarium and pond equipment at the best prices!
For those passionate about aquariophily
Having trouble finalizing your order? Contact us 24 hours a day by email at information@zoanthus.fr.
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
Bacterial Treatments
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)
Zoanthus Magnesium is a balanced blend of magnesium chloride and sulfate . It safely increases magnesium levels in reef aquariums while maintaining ionic balance.
Magnesium chloride, purity >99.0%, Ph.Eur, USP, E 511
All products in our range are prepared and packaged on site in our warehouse.
Products are now packaged in resealable pouches for less breakage during shipping. They're also more environmentally friendly, with 80% less plastic than our previous packaging.
Order it before
15:00 today
and receive it
on
Friday, February 13, 2026
with
Chronopost - Livraison express à domicile
The resulting solution is ready to use.
10ml of this solution increases magnesium levels by 5mg/l in 100l of water. It is best to distribute it in small amounts over several hours. Be sure to increase magnesium gradually, to a maximum of 20mg/l per day.
The ideal level of magnesium in aquariums is 1280-1380 mg/l.
Regularly test the magnesium level in your aquarium water to maintain stable water parameters.
First element of the Balling method, calcium chloride allows the maintenance of the level of calcium ( Ca ) of the sea water in the application of the Balling method.
3kg of powder allows the preparation of 42 liters of solution. That's 0€47 per litre!
High purity chemical products compliant with the European Pharmacopoeia prepared and packaged on site in our warehouse.
Products are now packaged in resealable pouches for less breakage during transport. They are also more ecological with 80% less plastic compared to our old packaging.
Second element of the Balling method, sodium hydrogen carbonate allows the maintenance of the carbon hardness (Kh) of seawater in the application of the Balling method.
3kg of powder allows the preparation of 36 liters of solution. That's 0€33 per litre!
High purity chemical products compliant with the European Pharmacopoeia prepared and packaged on site in our warehouse.
Products are now packaged in resealable pouches for less breakage during transport. They are also more ecological with 80% less plastic compared to our old packaging.
Set of 5 labels for marking the containers of your preparations: Calcium, KH, Salt without salt, Magnesium and Carbonate.
Photo: example of set up, cans sold separately.
This SALIFERT brand analysis kit allows you to accurately measure the magnesium level of your seawater. Allows you to take around 50 measurements.
This kit contains the 3 basic Balling products: Zoa Calcium 3kg , Zoa Bicarbo 3kg and Zoa Mineral 1kg as well as 3x250ml of trace elements.
All our Balling products are prepared and packaged on site in our warehouse.
This SALIFERT brand analysis kit allows you to accurately measure the calcium level of your seawater. Allows you to take 50 to 100 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.
Canister with a capacity of 5 liters allowing the preparation and storage of your balling or other solutions.
Product used to maintain a stable level of magnesium in reef aquariums.
Important element for hard corals and calcareous algae. Recommended in all aquariums.
Magnesium Zoanthus is a balanced blend of magnesium chloride and sulfate . It allows to increase the rate of magnesium in reef aquariums in a safe way, while preserving the ionic balance.
FAUNA MARIN Balling Salt Magnesium Mix 1kg is a special ultra-pure salt for magnesium supplementation in marine aquariums using the Balling Light method. This mix provides stable and bioactive magnesium , essential for optimal coral growth and maintaining balanced aquatic chemistry. The stabilized trace elements and minerals remain available longer for your marine inhabitants, promoting vibrant colors and strong skeletons for corals, shellfish, and invertebrates. Easy to use and compatible with all filtration systems, it ensures stable water and a consistent pH for a healthy and thriving aquarium.
Ultra Easy MG is a highly concentrated additive for the maintenance of magnesium in marine aquaria.
Optimized and concentrated blend of magnesium chloride and sulfate salts designed to restore insufficient magnesium levels by causing minimal impact to the ionic balance existing in natural seawater.
Optimized and concentrated blend of magnesium chloride and sulfate salts designed to restore insufficient magnesium levels by causing minimal impact to the ionic balance existing in natural seawater.
All-in-One X-Pro 1000ml provides the reef aquarium with everything the organisms (such as corals, calcareous algae, tridacnas etc.) need to synthesize their skeletons . Increases alkalinity (Ca, Mg, Ba, Sr).
What they think about it
(and they are right...)
Massimo P.
8 (Translated review)
Jean-François L.
good product (Translated review)
David D.
top (Translated review)
Antoine B.
Very good (Translated review)
Steve F.
I highly recommend (Translated review)
Jonathan m.
Corals completely satisfied (Translated review)
Fabrice d.
well (Translated review)