Brightwell Aquatics Alkalin8.3-P

Overview
Brightwell Aquatics Alkalin8.3-P is a high-purity, dry powdered buffer blend designed to increase and stabilize alkalinity (carbonate hardness or KH) in marine and reef aquariums. It maintains a stable pH within the optimal 8.1–8.3 range, supporting coral growth, calcification, and overall system health. This phosphate-free formula dissolves quickly, making it ideal for reef keepers who prefer precise dosing and long-term chemical stability in their systems.

Key Features

• Raises and stabilizes alkalinity (KH) to promote a balanced pH

• Supports coral skeletal growth and biological function

• Free of phosphates, silicates, and organic material

• Fast-dissolving, high-purity powdered formulation

• Ideal for reef and marine aquarium systems of any size

• Helps prevent pH fluctuations that can stress livestock

• Safe for use with all marine fish, corals, and invertebrates

Product Specifications

• Form: Dry powder

• Primary Function: Raises and maintains alkalinity (carbonate hardness)

• pH Range Supported: 8.1 – 8.3

• Composition: Carbonate and bicarbonate salts; phosphate-free

• Compatibility: Marine and reef aquariums

• Mixing Ratio: 1 g per 20 US gallons increases alkalinity by ~1 dKH

• Usage: Mix with purified freshwater before adding to system

• Available Sizes:

  • 250 g / 8.8 oz

  • 500 g / 17.6 oz

  • 1 kg / 2.2 lbs

  • 2 kg / 4.4 lbs

  • 4 kg / 8.8 lbs

  • 20 kg / 44 lbs