Seachem Reef Strontium

Reef Strontium is intended to restore and maintain strontium to levels found in natural seawater without affecting pH. Strontium is utilized in the same manner as calcium and holds a similar importance in maintaining a vigorous level of growth.

Strontium occurs in natural seawater at a concentration of about 8 to 10 mg/L. It is chemically very similar to calcium, and many organisms incorporate it in their skeletons along with calcium. Its addition to reef aquariums aids the growth of corals, coralline algae and other organisms that lay down a calcereous skeleton or shell, including tridacnid clams.

Sizes: 250 mL

Reef Strontium contains 10,000 mg/L of available strontium as a gluconate complex. Gluconate complexation confers several benefits: it increases the bio availability of the strontium, it provides a rich source of metabolic energy to help maintain peak coral growth, and it inhibits strontium precipitation/alkalinity depletion. Gluconate contains no nitrogen or phosphorous, thus it is biologically impossible for it to lead to algae growth in a properly maintained reef system.

BEGINNER: Use 1 capful (5 mL) per 80 L (20 gallons) twice a week. ADVANCED: Check strontium level, then follow dosing regimen above until strontium is adjusted to 8-12 mg/L. Each dose will raise strontium by about 0.6 mg/L. Size or frequency of dose can be adjusted. Thereafter, use as required to maintain strontium. EXPERT: After determining the strontium consumption rate, set up a continuous drip system. Use the following formula to determine how much to add to your top-off water: m=0.4vs (m=mL of product to add to top off water, v=volume of tank in gallons, s=amount to raise strontium in mg/L). For example, if you want to raise strontium by 2 mg/L in a 50 gallon tank, then you would add 0.4x50x2=40 mL into the top-off water. HINTS: Use the Reef Status: Strontium test kit to measure strontium.

Compatibility

Marine and reef. Do not mix it directly with any carbonate supplement: dose strontium and carbonate on alternate days, or at least 30 minutes apart.

Excess strontium drives carbonate alkalinity down, so make large adjustments slowly. Beginner dose: 5 mL per 80 L (20 US gallons) twice a week, which raises strontium about 0.6 mg/L; aim for 8 to 12 mg/L.

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.

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 48 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.