Reef Code B (250ml, 500ml) Balanced Calcium and Alkalinity System
$9.99
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Product details
Product details
Reef Code B (250ml, 500ml) Balanced Calcium and Alkalinity System is the carbonate/buffering component of a two-part dosing approach designed to add calcium and carbonates in a ratio similar to natural seawater when used alongside Reef Code A. In practical reef-keeping terms, it helps support stable alkalinity (buffering capacity) and pH by replenishing the carbonate species corals and other reef-building organisms need to build new aragonite skeleton. The result is simpler maintenance of calcium/alkalinity for reef aquariums, especially when alkalinity demand comes from reef-building livestock such as corals, clams, and calcareous algae.
Features:
- Two-part carbonate component for calcium and alkalinity supplementation (used with Reef Code A for natural seawater-style balance)
- Designed to help reduce alkalinity and pH instability compared with single-ingredient KH boosters
- Adds multiple major, minor, and trace minerals alongside calcium/carbonates
- Ionically balanced with respect to natural seawater concentrations of calcium and carbonates when dosed in equal amounts with Reef Code A
- Contains no phosphate, silicate, or organic material
- Marine-scientist formulated; helps provide available building blocks for reef-building organisms
Specifications:
- Available sizes: 250 ml, 500 ml
- Basic dosing guidance: Add 5 ml (1 capful) per 25 US-gallons every other day (or as needed) to maintain alkalinity between 7–12 dKH
- Basic coverage claim (per 250 ml): 250 ml treats up to 1,250 US-gallons when dosed as directed
- All-dosing separation: Do not mix products in the same container; allow 60 seconds between Reef Code A and Reef Code B dosing
- Alkalinity impact (measurements in dKH): Approx. 2.22 dKH increase per 1 ml per 1 US-gallon
- Compatibility note (to prevent precipitation): Maintain magnesium at 1,290–1,320 ppm before using Reef Code B (alone or together with Reef Code A)
- Safety: Contains carbonate and bicarbonate salts; harmful if swallowed; may cause eye/skin irritation





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