SKU: 82664873699

Seachem Reef Advantage Calcium

Sale price$133.20 Regular price$148.00
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Description

Seachem Reef Advantage CalciumSeachem Reef Advantage Calcium Seachem Reef Advantage Calcium is used to restore and maintain calcium levels in aquariums to support coral growth while also providing magnesium and strontium in proportionate amounts. Concentrated, powder ionic calcium Maintains magnesium and strontium Can be added directly to aquarium Seachem Reef Advantage Calcium is a non caustic (pH 8. 38. 6) optimized blend of ionic calcium designed to restore and maintain calcium

Seachem Reef Advantage Calcium

Seachem Reef Advantage Calcium is used to restore and maintain calcium levels in aquariums to support coral growth while also providing magnesium and strontium in proportionate amounts.

  • Concentrated, powder ionic calcium
  • Maintains magnesium and strontium
  • Can be added directly to aquarium

Seachem Reef Advantage Calcium is a non-caustic (pH 8.3–8.6) optimized blend of ionic calcium designed to restore and maintain calcium to levels found in natural seawater. Calcium and carbonates are essential to all coral growth. If either becomes deficient, coral growth will cease, followed by a rapid decline in coral health.

Reef Advantage Calcium™ also includes magnesium and strontium in amounts proportionate to typical utilization ratios (100:5:0.1, Ca:Mg:Sr). This allows one to maintain these two important elements while maintaining calcium. Unlike limewater (kalkwasser), Reef Advantage Calcium™ does not have a caustic pH and will not deplete magnesium. Used as directed, it will not deplete alkalinity.

Directions

BEGINNER: Use 5 g (1 level teaspoon) per 150 L (40 gallons) twice a week. Dissolve in at least 250 mL (1 cup*) of freshwater. Check calcium every 2 weeks and adjust amount or frequency accordingly.

ADVANCED: Check calcium level, then follow addition regimen above until calcium is adjusted to 380–420 mg/L. Each 5 g/150 L will raise calcium by about 12 mg/L. Quantity or frequency can be adjusted, but do not exceed 10 g/150L per day. Thereafter, use as required to maintain calcium.

EXPERT: After determining the calcium consumption rate, set up a continuous drip system. Use the following formula to determine how much to add to your top-off water: m=vc/400 (m=grams to add to top off water, v=volume of tank in liters, c=amount to raise calcium in mg/L). For example, if you want to raise calcium by 25 mg/L in a 200 liter tank, then you would add 200x25/400=12.5 g into the top-off water. [For reference: 1 gallon*=3.8 liters, 5 g=1 teaspoon*]. HINTS: If used with Reef Calcium™, it is not necessary to exceed 380 mg/L total calcium. Use Reef Status™: Calcium to measure calcium.

DO NOT OVERDOSE: Excess calcium may enhance the loss of carbonate alkalinity. Do not directly mix with any carbonate supplement. Best if calcium & carbonate additives are added on alternate days or at least 30 minutes apart.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 82664873699

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Holly Kennedy
Fort Morgan, US
★★★★★ 5
Fits Great!
Size: 8.8" x 9.3" x 1.2"
Have a 2014 Honda Pilot and this cabin air filter fit perfectly and was extremely easy to install. Got dirt cheap during a lightning deal! What can I say- 5 stars and just buy it!
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Reviewed in the United States on March 24, 2026
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Brian
Port Orchard, US
★★★★★ 5
Higher quality than OEM Honda.
Size: 8.8" x 9.3" x 1.2"
I highly recommend this filter! This filter I had fast shipping and is easily installed. Side by side comparison with OEM Honda filter was amazing. I’ll definitely reorder this filter.
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Reviewed in the United States on March 19, 2026
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Kelley
Carnegie, US
★★★★★ 5
Works great
Size: 8.8" x 9.3" x 1.2"
This fit perfectly in my 2017 Acura MDX. I can change my own filter in less than 5 minutes and it costs much less than the OEM. The filters lasted me about a year before I needed a new one.
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Reviewed in the United States on May 28, 2026
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Plis
Whiting, US
★★★★★ 4
Encaja perfecto
Size: 8.8" x 9.3" x 1.2"
Trabajo muy bien
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Reviewed in the United States on March 24, 2026
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Mathew
Alexandria, US
★★★★★ 5
Great product !!!
Size: 8.8" x 9.3" x 1.2"
The product was in great shape when delivered. Even though the package was thin as it is the delivery was made with card and all was well with product. The instructions were good to use and change in my car. Also it showed the make of vehicle so I won’t be confused at all. Overall it was a great buy
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Reviewed in the United States on May 13, 2026

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