Salifert Potassium Test Kit calcium Ideal for 50 L (15

Ideal for 50 L (15 US gal) aquariums

fill slowly to avoid disturbing Flourite Dark substrate bed

A scientifically blended nutrient mix specifically for larger carnivorous fish who tend to avoid feeding from the top of the aquarium

Dried Egg Yolk

Both black diamond filter bag

Salifert Potassium Test Kit calcium Ideal for 50 L (15Salifert's Potassium Test Kit provides a quick, accurate, and reliable method for measuring potassium levels in your reef aquarium. Potassium test kits are notoriously difficult to use on average, but Salifert's kit provides a method to take potassium readings without the stress and headache, giving you a precise analysis in minutes. In naturally occurring saltwater, potassium levels usually equal around 400 ppm. Coral start to become potassium