Seachem Flourish Potassium Size:250ML FritzGuard® provides a replacement slime

FritzGuard® provides a replacement slime coat to aid fish that have lost theirs or have been injured due to stress

when used in conjunction with the Nitrate Pro Reef Test Kit

Full Flowcolour plumbing system including pipes

On the other hand

Seachem Flourish Potassium Size:250ML FritzGuard® provides a replacement slimeFlourish Potassium contains 50,000 mg L of potassium suitable for the natural planted aquarium. Potassium is one of several elements that are vitally important to maintaining a vigorous level of growth in a planted aquarium. Potassium can become depleted in a rapidly growing system or when the source water has a low mineral content. In these cases potassium could become the limiting factor to growth. Use Flourish Potassium to prevent potassium