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The API® REEF MASTER TEST KIT test 4 key parameters – calcium
Provides heat
Average Density: 90 pounds per cubic foot
It is a 2-in-1 design that allows user to change from scraping to scrubbing mode in one simple flip
Leave the trap in the aquarium close to aquarium glass or in rock caves
Fluval Betta Poly-Carb Cartridge, 4 Pack Reef salt The API® REEF MASTER TESTSpecifically designed for the Fluval Betta Aquarium Kit (6 US Gal 20 L model), the Betta Poly Carb Cartridge offers effective 2 in 1 mechanical and chemical filtration for clean and clear water. Key Features: Mechanical and chemical filter media Carbon impregnated polyester cartridge Effectively traps fine debris and contaminants Removes harmful toxins, discolorations and odors For best results, replace every 2 4 weeks Convenient 4 pack format