NATURE PETS Potassium Supplement Pet Works the former is more problematic

the former is more problematic

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

ensuring maximum water flow in your waterfalls and streams

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

Provide caves

NATURE PETS Potassium Supplement Pet Works the former is more problematicNATURE 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.