Brighty K is a liquid fertilizer supplying potassium to planted aquariums. Brighty K also has an effect of enhancing the buffering capacity of water and prevents a decline in pH of aquarium water
Give daily one pump stroke (1 ml) Brighty K for 20 l water in your tank. Best time to fertilize is when the lights are on. In heavily planted tanks, increase daily dosage to two or three times the standard dosage.