Fluval U2 - Internal Filter Fertilizers A single unit can illuminate

A single unit can illuminate an aquarium up to 90cm in width

and dilutions of the sample with distilled water will be required

An agent to maintain constant levels of calcium in coral reef aquaria

Ideal for use when water changes are performed as a prophylactic treatment

Fluval U2 - Internal Filter Fertilizers A single unit can illuminateFeatures Designed for aquariums up to 30 US Gal 110 L Use as a primary filter for smaller aquariums, or supplementary filter for larger aquariums Position horizontally for shallow tanks, larger tanks with low water levels, or to create a decorative waterfall feature Position vertically against aquarium wall to create currents or customized flow patterns Convenient flip top lid allows for quick and easy access to filter cartridge for maintenance or