BRS

Brightwell Reef Code A & B 2-Part Supplement

BRS_BRIGHTWELL_2_PART_ALK_CAL

$30.00In stock

Representative product: Brightwell Aquatics Reef Code A & B, a balanced two-part calcium and alkalinity dosing system for reef aquariums. Reef Code A is the calcium-bearing component and Reef Code...

1
Or build it into a bundle — save up to 6% ↓
Free shipping over $99 Ships within 24 hours 30-day returns
OVERVIEW 01

What it is, and who it is for.

Brightwell Reef Code A & B 2-Part Supplement

Representative product: Brightwell Aquatics Reef Code A & B, a balanced two-part calcium and alkalinity dosing system for reef aquariums. Reef Code A is the calcium-bearing component and Reef Code B is the carbonate (alkalinity) component; used in equal amounts they replenish calcium and carbonates in the same ratio found in natural seawater to support corals, clams, and calcareous algae. Both contain no phosphate, silicate, or organic material. Specs and image below are for Reef Code A (Part A), 2L.

Specifications
Representative Variant Reef Code A (Part A), 2 Liter
Part A = Calcium, B = Alkalinity (carbonate)
Aquarium Type Saltwater / Reef
Calcium (min) 1,774 mg/oz (60,000 ppm)
Magnesium (min) 42 mg/oz (1,500 ppm)
Strontium (min) 36 mg/oz (1,200 ppm)
Dosing (Part A) Each ml raises calcium ~16 ppm per US gallon
Dosing (Part B) Each ml raises alkalinity ~2.22 dKH per US gallon
Available Sizes 250ml, 500ml, 2L, 20L
SKU 209259
BUILD AROUND IT · LIVE

Build around the Brightwell Reef Code A & B 2-Part Supplement.

It's already in your system below. Add the flow, filtration and dosing around it and the discount starts working — tiers climb as the build grows, and the reef meter fills with it.

COMPARE 06

Pick the right one, not the biggest one

The honest line-up from supplements. Most buyers reading this page should buy the middle column.

BRS 2-Part Calcium & Alkalinity SupplementBRS 2-Part Calcium & Alkalinity Supplement$30BRS-2PART View product
Our pickBrightwell Reef Code A & B 2-Part SupplementBrightwell Reef Code A & B 2-Part Supplement$30This page Add to cart
Tropic Marin All-For-Reef SupplementTropic Marin All-For-Reef Supplement$40TM-AFR View product
Price
$30
$30
$40
SKU
BRS-2PART
BRS_BRIGHTWELL_2_PART_ALK_CAL
TM-AFR
Buy it for
The BRS 2-Part Pharma Calcium & Alkalinity Starter Package supplies...
Representative product: Brightwell Aquatics Reef Code A & B, a...
Tropic Marin All-For-Reef is an all-in-one dosing solution that combines...
QUESTIONS 07

Asked before checkout

The questions our support inbox actually gets.

Does it ship quickly?+

Orders placed before 2 PM ET on a business day leave the same day. Tracking is emailed the moment the label prints.

What if it's the wrong fit for my tank?+

Return it. 30 days, no restocking fee, refund to the original payment method. Better: tell us your tank first and we'll spec the system for free — half of all returns are sizing problems.

Who handles the warranty?+

We do. Everything carries the manufacturer's warranty and we run the claim for you — one email to us instead of a ticket queue.

How does the bundle discount work?+

Add items in the bundle builder: 2+ items saves 5%, 3+ saves 8%, 4+ saves 12%, and 5+ saves 15% off the whole system, applied at checkout.