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.
Reef Advantage Strontium™ restores and maintains strontium
to levels found in natural sea water. Strontium is utilized by corals in
the same manner as calcium and holds a similar importance in
maintaining a vigorous level of growth. It is most useful in densely
populated aquariums requiring a continuous supply of strontium. Reef
Advantage Strontium™ is a highly concentrated (30,000 ppm), ionically
balanced strontium supplement.
Unlike other strontium chloride products, Reef Advantage
Strontium™ is formulated so that it can be added directly to the
aquarium. Competing products require one to mix a separate solution
before adding it to the system.
BEGINNER: Use 8 g (1 level teaspoon) per 150 L (40 US
gallons) twice a week. May be added directly to aquarium. For precise
dosing, use the Seachem Digital spoon scale.
ADVANCED: Check magnesium level, then follow addition
regimen above until magnesium is adjusted to 1,200–1,350 mg/L. Each 5
g/80 L will raise magnesium by about 5 mg/L. Amount or frequency can be
adjusted, but do not exceed 25 g/80 L per day. Thereafter, use as
required to maintain magnesium.
EXPERT: After determining the strontium depletion rate, set
up a continuous drip system. Use the following formula to determine how
much to add to your top-off water: m=vs/30 (m=grams to add to top off
water, v=volume of tank in liters, s=amount to raise strontium in mg/L).
For example, if you want to raise strontium by 6 mg/L in a 200 L
aquarium, then you would add (200x6)/30=40 g into the top-off water.
[For reference: 1 gallon = 3.8 liters]. Use the Reef Status™: Strontium
test kit to check strontium levels.
DO NOT OVERDOSE: Excess strontium may enhance the loss of
carbonate alkalinity. Do not directly mix with any carbonate supplement.
Best if strontium & carbonate additives are added on alternate days
or at least 30 minutes apart.
Amounts per 1 gram
Ingredients: strontium chloride
This is for the 300g bottle, others sizes are available either in store or by request.