Brightwell Aquatics

Brightwell Aquatics ABACALP16KG 16kg Calcion Dry Salt Water Conditioners for Aquarium 35 2-Pound

4.2(30)
$329.95

1229+ bought in the past month

About this item

  • Increases concentration of calcium to provide growth to corals and other invertebrates.
  • Stronger and more economical than liquid calcium solutions.
  • Made in the USA.
$329.95

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Product details
BrandBrightwell Aquatics
Liquid Volume500 Milliliters
Item Weight1 Pounds
Item FormLiquid
ManufacturerTopDawg Pet Supply
Technical specifications
item_weight1 Pounds
manufacturerTopDawg Pet Supply
item_model_numberCALP16KG
date_first_availableOctober 18, 2010
item_package_dimensions_l_x_w_x_h14.5 x 12.5 x 12.5 inches
item_dimensions_lxwxh1 x 1 x 1 inches
brand_nameBrightwell Aquatics
target_audience_keywordFish
directionsBasic: Dissolve 2 grams (~½ teaspoon) of product per 20 US-gallons of aquarium water in 8-fl. oz. of freshwater; add every other day or as needed to maintain the calcium concentration within a range of 412 - 450 ppm. When used in this fashion, 800 g treats up to 8,000 US-gallons (30,283 L). Advanced: Create a stock solution by dissolving 10 grams (~5 teaspoons) of Calcion-P in 8-fl. oz. of freshwater (preferably purified); each ml of the solution will increase the calcium concentration (”[Ca2+]”) in 1 US-gallon (3.785 L) of water by 2.50 ppm. [Reference: Each g of Calcion-P will increase the [Ca2+] in 1 US-gallon (3.785 L) of water by 95 ppm.] If initial [Ca2+] in the aquarium is below 412 ppm, add stock solution at maximum rate of 10 ml per 20 US-gallons daily until desired concentration is attained, then dose daily or weekly as needed (see below). Maintain [Ca2+] within a range of +/-10 ppm. Once desired [Ca2+] has been acquired, measure aquarium's [Ca2+] at the same time each day over a one- to two-week period to determine the daily rate of calcium uptake (i.e. the decrease in calcium). To determine daily dosing rate (preferable to weekly dosing): estimate volume of water in entire aquarium system (US-gal.); divide the daily decrease in [Ca2+] by 2.50; multiply this number by volume of water in system to obtain daily ml of stock solution required to maintain stable [Ca2+]. Caution: Keep out of reach of children. Not for human consumption.
model_nameCalcion-P
size16-kg
age_range_descriptionAll Life Stages
number_of_items1
included_componentsCalcion-P
specific_uses_for_productCoat
product_dimensions1 x 1 x 1 inches; 1 Pounds
best_sellers_rank#86,289 in Pet Supplies ( See Top 100 in Pet Supplies ) #795 in Aquarium Water Treatments

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Customer reviews

4.230 ratings
  1. 575%
  2. 40%
  3. 30%
  4. 213%
  5. 113%
★★★★★

Effective Calcium Supplement for Reef Aquariums

JasonmemoJanuary 17, 2025✓ Verified purchase

I've been using the Brightwell Aquatics Calcion-P Dry Calcium Supplement in my reef aquarium for several months and have observed significant improvements in coral growth and overall health. Effectiveness: This supplement effectively increases the calcium concentration in marine aquarium water, providing essential support for the growth of corals and other invertebrates. Maintaining calcium levels between 412 - 450 ppm has been straightforward with regular dosing. Ease of Use: The product dissolves easily in freshwater, making it simple to prepare a stock solution. The included dosing instructions are clear, allowing for precise adjustments based on the specific needs of the aquarium. Quality: Brightwell Aquatics is known for producing high-quality aquarium supplements, and Calcion-P is no exception. It contains no unwanted organic materials such as EDTA, gluconate, or polygluconate, ensuring that only beneficial elements are introduced into the system. Pros: Highly Effective: Supports robust coral growth by maintaining optimal calcium levels. Easy to Use: Dissolves readily with clear dosing guidelines. Pure Formula: Free from unnecessary additives, providing only essential calcium. Cost-Effective: A little goes a long way, making it economical for long-term use. Cons: Requires Regular Testing: To maintain optimal levels, regular testing of calcium concentration is necessary, which may be an added task for some aquarists. Final Thoughts: The Brightwell Aquatics Calcion-P Dry Calcium Supplement is a reliable and efficient product for maintaining calcium levels in reef aquariums. Its purity and effectiveness make it a top choice for aquarists dedicated to providing the best environment for their corals and invertebrates. Read more

★★★★★

Excelente

Daniel VegaSeptember 20, 2025✓ Verified purchase

Excelente producto para mantener los niveles de calcio Read more

★★★★★

Perfect for reefs

elizabeth arellanoJanuary 12, 2022✓ Verified purchase

It's great and dissolves quickly. Read more

★★☆☆☆

Bote abierto

Tigre SanchezSeptember 10, 2025✓ Verified purchase

El frasco venía abierto y todo el producto afuera del frasco, regado adentro de la bolsa, revuelto con el otro item. y el empaque que viene de seguridad entre el frasco y la tapadera no lo traía. Sin embargo, debido a qué urgía el uso del Calcio no se devuelve, pues el otro no llegaría a tiempo, pero es un producto al que no le voy a dar 5 estrellas, a pesar de haberlo usado anteriormente y no haber tenido problemas en el pedido. Read more

★★★★★

Ok magnesium

Daniel roblesMarch 3, 2024✓ Verified purchase

Work is done good coral happy Read more

★★★★★

Excellent products.

A M.August 27, 2015✓ Verified purchase

I have 3 systems ranging from a Biocube 29 up to a 225 US gallons predator system. I use only Brightwell chemicals in all of them. Excellent products. Read more

★☆☆☆☆

Unscrewed in Package

OwenDecember 21, 2022✓ Verified purchase

The calcium came completely unscrewed and the powder was all over the package. I can't see a feasible way this could've happened on accident. Someone seems to have unscrewed it and thrown it in the package. The powder is still usable but highly disappointed still. Read more

Review image 1
★★★★★

Five Stars

DavidJune 23, 2015✓ Verified purchase

this stuff works great Read more

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