Brightwell Reef Code A & B 2-Part Supplement
BRS_BRIGHTWELL_2_PART_ALK_CAL
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...
Or build it into a bundle — save up to 6% ↓What it is, and who it is for.
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.
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.
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 Supplement
Brightwell Reef Code A & B 2-Part Supplement
Tropic Marin All-For-Reef SupplementAsked 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.