Seachem Reef Advantage Magnesium

Seachem Reef Advantage Magnesium

Seachem Reef Advantage Magnesium is a concentrated marine aquarium magnesium supplement for reef and saltwater aquarium keepers looking to restore depleted magnesium levels while maintaining ionic ratios found in natural seawater. This ionically balanced blend combines magnesium, chloride and sulphate salts, with no ammonia added.

Key Benefits

• Concentrated 80,000 ppm magnesium source for marine aquariums.
• Designed to restore depleted magnesium with minimal impact on natural seawater ionic ratios.
• Contains a balanced blend of magnesium, chloride and sulphate salts.
• Contains no ammonia, a contaminant found in some liquid magnesium supplements.
• Magnesium is important for helping prevent ionic imbalance in reef aquarium water.

Suitable For

Suitable for marine and reef aquariums where magnesium levels require supplementation. Severely depleted magnesium levels below 800 mg/L may be associated with depressed pH and difficulty maintaining proper magnesium levels.

Dosage

Use 5 g (1 level teaspoon) per 80 L (20 gallons) twice a week. Dissolve the required amount in at least 250 mL (1 cup) of freshwater before use.

Specifications

• Type: Marine aquarium conditioner and magnesium supplement.
• Magnesium concentration: 80,000 ppm.
• Ammonia: None.

What's Included

Seachem Reef Advantage Magnesium marine aquarium supplement.

Frequently Asked Questions

What is Seachem Reef Advantage Magnesium used for?
It is used to restore depleted magnesium levels in marine and reef aquariums while minimising the impact on ionic ratios found in natural seawater.

How much Reef Advantage Magnesium should I dose?
Use 5 g, equal to 1 level teaspoon, for every 80 L (20 gallons) of aquarium water twice weekly.

Do I add the powder directly to my reef tank?
No. Dissolve the measured dose in at least 250 mL (1 cup) of freshwater before use.

Does this Seachem magnesium supplement contain ammonia?
No. Seachem Reef Advantage Magnesium contains no ammonia.

Why is magnesium important in a reef aquarium?
Magnesium is vitally important in preventing ionic imbalance. Levels below 800 mg/L can be associated with depressed pH and difficulty maintaining proper magnesium levels.

When can I expect delivery?

• Gauteng (Jhb/Pta) - 1-3 working days
• Nationwide (Cpt/Dbn+) - 2-5 working days
• Outlying Areas - 3-7 working days

All orders are sent via Economy Road, typically through Fastway or Internet Express Couriers*. Estimated timeframes are not guaranteed. Once the order is collected by the courier, we have no control over third-party logistics and cannot make any time promises.

If you prefer a faster 🚀 shipping option, we also offer The Courier Guy during checkout in the dropdown selection. Please note that this option is not free, and you must choose it to use it. Please pay careful attention to the cutoff times and delivery timeframe for these options during checkout.

Enjoy the convenience of collection points and lockers! 📦

No more waiting at home or at work for your delivery. Simply choose a collection locker or pickup point and collect your order when it suits you.

Delivery times to lockers and pickup locations typically range from 2–7 working days, depending on your location.*

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Collection timeframes:

• Bob Box: Collect within 2 days of receiving your collection notification.
• PUDO Lockers: Collect within 36 hours of receiving your collection PIN or SMS notification.

If a PUDO parcel is not collected within 36 hours, it will automatically be transferred to the nearest PUDO Kiosk or Depot at no additional cost. The parcel will then be held there for approximately 2 days before being returned.

Please ensure you collect your parcel within the applicable collection period. Uncollected parcels will be returned to the sender, and additional shipping charges may apply should the order need to be resent.