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Seachem Reef Calcium 500ml

4.5 out of 5 stars 10 customer reviews
| 3 answered questions

Was: $15.03
Price: $9.60 & FREE Shipping on orders over $49. Details
You Save: $5.43 (36%)
Only 15 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
  • Organic calcium
  • Maintains peak coral growth
  • Will not alter pH
10 new from $9.49

$9.60 & FREE Shipping on orders over $49. Details Only 15 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Seachem Reef Calcium 500ml
  • +
  • Seachem Reef Complete 500ml
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  • Seachem Reef Plus 500ml
Total price: $29.12
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Product Description

Reef Calcium™ is a concentrated (50,000 mg/L) bioavailable polygluconate complexed calcium intended to maintain calcium in the reef aquarium without altering pH.Polygluconate complexation confers several benefits: it increases the bioavailability of the calcium, it provides a rich source of metabolic energy to help maintain peak coral growth, and it prevents calcium precipitation/alkalinity depletion. Polygluconate contains no nitrogen or phosphorous, thus it is biologically impossible for it to lead to algae growth in a properly maintained reef system. Reef Calcium™ may be used alone to maintain calcium but will provide enhanced levels of coral growth when used in conjunction with an ionic calcium supplement (Reef Complete®, Reef Advantage Calcium™). Reef Calcium™ is intended to maintain calcium levels; if calcium becomes seriously depleted one should either perform a water change or use an ionic calcium supplement to restore the depleted level of calcium.

Product Details

  • Product Dimensions: 7.6 x 1.5 x 1.5 inches ; 1.4 pounds
  • Shipping Weight: 1.5 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B000256AAC
  • Item model number: 67103530
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (10 customer reviews)
  • Amazon Best Sellers Rank: #34,475 in Pet Supplies (See Top 100 in Pet Supplies)

Important Information

Directions
Add 1 capful (5 mL) per 80 L (20 gallons*) twice a week. You can increase the amount or frequency based on growth response but do not exceed 3 capfuls per 80 L (20 gallons*) per day. Each capful will raise calcium by about 3 mg/L. HINTS: Use the Reef Status™: Calcium test kit to measure calcium. It is not necessary to exceed 380 mg/L total calcium when using this product. Color and clarity may vary between lots.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
Great stuff. I use this to maintain calcium in between water changes. I have monitored my dosing for about a week and found that in my system (93 gallon cube with 40g breeder sump filled about 1/2 way = ~100 gallons of water considering rock displacement) 1 cap is ~10ppm. Consumption rate will depend on your system an how many calcium using species are in there. Consider some magnesium as well.
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Verified Purchase
Reef Calcium is good quality, but very expensive in the scheme of things. I switched to using the Bulk Reef Supply Bulk Calcium Chloride that I mix myself and that is much more affordable and seems to be just as good at raising my calcium.
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Verified Purchase
I bought this to help my invertebrates aid in shell making and molting. Awhile back my crayfish died while molting.After I added this the other crayfish molten on a regular basis with no problems and the snails growth is CRAZY their shells have all doubled in size in about 2 months
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While there are many different methods of maintaining and increasing calcium in a reef tank, I've found that Seachem's Reef Calcium is the easiest. I was able to maintain consistent levels of calcium with this product and was able to dose in a short amount of time. Unlike the dry mix, this is ready to go and you can measure with the cap that comes with the bottle!

If you don't have a great amount of time for testing, mixing, and dosing, this product will be great for you! It won't interfere with other levels if you use it correctly, so that is a huge plus.
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Verified Purchase
A great calcium supplement for any reef aquarium. it has already started to help my coral grow and stay healthy
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