

🌊 Elevate your reef’s vitality with science-backed balance!
Brightwell Aquatics Reef Code B is a 4-liter, multi-component alkalinity supplement designed for saltwater and reef aquariums. It works in tandem with Reef Code A to deliver calcium and carbonate in natural seawater ratios, stabilizing pH and maintaining essential mineral balance without harmful additives. Made in the USA and formulated by marine scientists, it supports robust coral and reef organism growth while simplifying aquarium maintenance.









| ASIN | B085PRS1VL |
| ASIN | B085PRS1VL |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #30,044 in Pet Supplies ( See Top 100 in Pet Supplies ) #275 in Aquarium Water Treatments |
| Brand Name | Brightwell Aquatics |
| Color | Cranberry |
| Customer Reviews | 4.7 4.7 out of 5 stars (277) |
| Date First Available | March 9, 2020 |
| Date First Available | March 9, 2020 |
| Directions | Basic: Shake product well before using. Add 5 ml (1 capful) of product per 25 US-gallons of aquarium water every other day or as needed to maintain the alkalinity within a range of 7-12 dKH. When used in this fashion, 250 ml treats up to 1,250 US-gallons (4,732 L). When used in equal amounts with Reef Code A, the calcium and carbonates being added are in the same ratio found in natural seawater. D… |
| Included Components | Reef Code B |
| Item Package Dimensions L x W x H | 11.85 x 7.09 x 4.17 inches |
| Item Weight | 135.26 Ounces |
| Item model number | RCB4L |
| Item model number | RCB4L |
| Manufacturer | Brightwell Aquatics |
| Manufacturer | Brightwell Aquatics |
| Model Name | Reef Code B |
| Package Dimensions | 11.85 x 7.09 x 4.17 inches; 8.45 Pounds |
| Size | 4-Liter |
| Specific Uses for Product | Coat |
| Target Audience Keyword | fish |
C**N
Good product
Fantastic product. Easy to use, very good instruction and information, and is extremely effective.
R**D
Works great. My corals love it.
Been using this product for years. My corals love it. Have not changed since this brand works great so sticking with the same formula for my aquarium. I pair they product with reef code a.
A**N
Definitely a great carbonate additive
I dose with Kalkwasser for foundational CA/CACO3 needs because I don’t like adding the extra salts required in basically every other CA/buffering tech, but my system is long-passed sustainability on ‘limewater’ alone. But I do find the Brightwell carbonate supplement easily, reliably, and safely bridges the gap.
E**C
great product
Brightwell is a great product use nothing else but thier products for reef tank and this is a great price for thier product and last months in my 55 gallon great deal for your buck
R**R
Why isn't this stuff sealed??
I've ordered the reef code A & B. Both bottles weren't sealed & leaked all over. They were double bagged so I guess it was expected to leak.
R**9
Alkalinity/dKH Made Stable
Always been using this brand, Brightwell Aquatics. Requires the lowest dosage by volume compared to other good brands on the market as much as I know. Maintains Alkalinity stable, through an automated doser. Had to make a week’s adjustment on my tank’s requires daily dose and finally got it to stabilize. Remember that having a GFO requires more doses of this supplement since Granular Ferric Oxide lowers alkalinity, scrapped my GFO reactor so I use less Alk/dKH additive. Got a lot of macro algae to deal with the Phosphates (PO4) and other nutrients in my tanks’s System. This is the best and the only product I use for Alkalinity adjustments!
F**O
Aquatic
Quick delivery, great product for saltwater tank
G**O
Can't wait to use it!
Can't wait to use it I've heard nothing but good things about this 2 part.
B**Z
Solo como sugerencia deberían vender juntos los dos componentes AyB
Trustpilot
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