Great customer service, their product information is super detailed
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Brightwell Aquatics
Brightwell Aquatics Calcion - Concentrated Ionic Calcium Supplement for Reef Saltwater Aquariums Supports Coral Growth Aragonite Formation No
$34.99
Size500-ml
About this item
- BOOSTS CORAL GROWTH AND STRUCTURE Delivers essential ionic calcium to support rapid coral, clam, and reef invertebrate skeletal development and strength.
- HIGHLY CONCENTRATED FOR MAXIMUM EFFECTIVENESS Over 50% stronger than most competitors—maintains calcium between 412–450 ppm for vibrant reef aquariums.
- PURE FORMULA WITHOUT ORGANICS OR BINDERS Free of phosphate, silicate, EDTA, gluconate, and polygluconate for clean, effective marine water chemistry management.
- FORMULATED BY MARINE EXPERTS Made with ultra-pure water and lab-grade ingredients—backed by marine science and real aquarium testing.
- AMERICAN-MADE EXCELLENCE – Brightwell Aquatics is an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium.
- Brightwell Aquatics Calcion is a precision-formulated ionic calcium supplement designed to restore and maintain calcium levels in reef aquariums. Calcium is a vital component of aragonite, the mineral that forms the skeletons of corals, clams, tube worms, and other reef-building invertebrates. Maintaining calcium between 412–450 ppm allows for optimal coral growth and health, assuming other conditions such as alkalinity, magnesium, and lighting are within ideal ranges. Calcion is significantly stronger than most competing brands and contains no unwanted additives such as EDTA, gluconate, or polygluconate—ensuring a clean, reliable dose every time. It’s phosphate- and silicate-free and designed with purified water and lab-grade materials. This highly concentrated liquid makes dosing easy and accurate. Whether you're running a nano reef or a large-scale coral system, Calcion provides the ionic calcium reef tanks need to thrive. Regular use supports skeletal development and overall BOOSTS CORAL GROWTH AND STRUCTURE Delivers essential ionic calcium to support rapid coral, clam, and reef invertebrate skeletal development and strength.; HIGHLY CONCENTRATED FOR MAXIMUM EFFECTIVENESS Over
Specification
Product facts
Key details
- Brand
- Brightwell Aquatics
- Liquid Volume
- 17 Fluid Ounces
- Item Form
- Liquid
- Manufacturer
- TopDawg Pet Supply
- date_first_available
- June 24, 2004
Dimensions and fit
- dimensions
- 1 x 1 x 1 inches; 1 Pounds
- weight
- 1 Pounds
- Item Weight
- 1 Pounds
- item_weight
- 1 Pounds
- item_package_dimensions_l_x_w_x_h
- 7.64 x 2.28 x 2.2 inches
- item_dimensions_lxwxh
- 1 x 1 x 1 inches
- size
- 500-ml
- product_dimensions
- 1 x 1 x 1 inches; 1 Pounds
Technical specifications
- item_model_number
- CAL500
- model_name
- Calcion
Item information
- brand_name
- Brightwell Aquatics
- target_audience_keyword
- Fish, algae-eaters
- directions
- Basic Use: Shake well. Add 5 ml per 50 gallons every other day to maintain 412–450 ppm calcium. Advanced Use: Test calcium levels before dosing. Shake well before each use. 1 ml raises calcium by 40 ppm per 1 gallon. If calcium is low, dose up to 10 ml per 20 gallons daily. After reaching desired level, measure daily drop in calcium. Divide calcium drop by 40, then multiply by system volume for daily dose in ml. Daily dosing gives more stable calcium levels than weekly dosing. Always maintain calcium within +/-10 ppm for best results.
- age_range_description
- All Life Stages
- included_components
- Calcion
- specific_uses_for_product
- Coat
- is_discontinued_by_manufacturer
- No
- best_sellers_rank
- #40,484 in Pet Supplies ( See Top 100 in Pet Supplies ) #393 in Aquarium Water Treatments
Overview
About this item
- BOOSTS CORAL GROWTH AND STRUCTURE Delivers essential ionic calcium to support rapid coral, clam, and reef invertebrate skeletal development and strength.
- HIGHLY CONCENTRATED FOR MAXIMUM EFFECTIVENESS Over 50% stronger than most competitors—maintains calcium between 412–450 ppm for vibrant reef aquariums.
- PURE FORMULA WITHOUT ORGANICS OR BINDERS Free of phosphate, silicate, EDTA, gluconate, and polygluconate for clean, effective marine water chemistry management.
- FORMULATED BY MARINE EXPERTS Made with ultra-pure water and lab-grade ingredients—backed by marine science and real aquarium testing.
- AMERICAN-MADE EXCELLENCE – Brightwell Aquatics is an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently deliver advanced superior quality solutions to elevate the vibrancy and health of your aquarium.
- Brightwell Aquatics Calcion is a precision-formulated ionic calcium supplement designed to restore and maintain calcium levels in reef aquariums. Calcium is a vital component of aragonite, the mineral that forms the skeletons of corals, clams, tube worms, and other reef-building invertebrates. Maintaining calcium between 412–450 ppm allows for optimal coral growth and health, assuming other conditions such as alkalinity, magnesium, and lighting are within ideal ranges. Calcion is significantly stronger than most competing brands and contains no unwanted additives such as EDTA, gluconate, or polygluconate—ensuring a clean, reliable dose every time. It’s phosphate- and silicate-free and designed with purified water and lab-grade materials. This highly concentrated liquid makes dosing easy and accurate. Whether you're running a nano reef or a large-scale coral system, Calcion provides the ionic calcium reef tanks need to thrive. Regular use supports skeletal development and overall BOOSTS CORAL GROWTH AND STRUCTURE Delivers essential ionic calcium to support rapid coral, clam, and reef invertebrate skeletal development and strength.; HIGHLY CONCENTRATED FOR MAXIMUM EFFECTIVENESS Over
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Customer reviews
8 reviewsPositive
Rated 4.6/5 across 8 reviews — highly regarded by customers.
- 100% of sampled reviews are from verified purchases.
- 100% of sampled reviews give 4–5 stars.
Customers say
Customer summary is not available yet.
Works great
Love this one for sure Read more
Good product noticed healthier corals immediately
Started noticing a difference in my saltwater tank almost immediately when using this product it does not cloud up water. It does not have an odor and I didn't notice any other buildup Read more
Great price
Works great on my reef aquarium Read more
Great positive results.
Been using all brightwell products on my Coral Reef tank for many years, with positive results. I highly recommend their trace elements either manually or mechanically dosed. Read more
Great product, excellent company
Great product! Read more
Very nice calcium
Good coral happy Read more
Great product
Brightwell aquatics is a brand you can trust. Been using BA for many years. Read more
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