A high nitrate level can stunt growth or even cause jellyfish to start shrinking. For this reason, it's important to test this parameter regularly. The Seachem Nitrate/nitrite test kit is perfect for getting an accurate, precise reading of these water parameters in your aquarium. We utilize them to test our own jellyfish aquariums and systems. They’re accurate, reliable and straight forward to use. A perfect test kit for ongoing maintenance of your jellyfish aquarium.