NATURE PETS Potassium Supplement Pet Works Fluvals U-Series internal filters are

Fluvals U-Series internal filters are the perfect solution where external filtration is not possible

A heater can be added to the aquarium to provide a tropical fish environment(heater purchased separately)

Includes Cover Glass

Fluorine is one of the main micronutrients contained in seawater

Maxspect reinforced connecting rail kit to join 2x RSX Razors together

NATURE PETS Potassium Supplement Pet Works Fluvals U-Series internal filters areNATURE PETS Potassium Supplement increases the amount of viable potassium in your aquarium water helping you achieve lush plant growth & vitality in your fish. Directions: Add 1 teaspoon or 5g to 38 litres of aquarium water to raise potassium levels by approximately 40 ppm.