Premium Nutrition is dosed every week in connection with water changes. Precise dosing is made easy using the pump bottle, where one press of the pump doses 2 ml of fertilizer. We recommend 6 ml to 50 L of water, but advise assessing the plants' needs - for example, yellowish/light leaves are often a sign of nutrient deficiency.
It is always recommended to change a minimum of 25% of the water in the aquarium every two weeks. If unwanted algae growth occurs, more frequent water changes (up to 50% per week) and supplementation with several fast-growing aquatic plants such as Hygrophila, Vallisneria and Egeria are recommended.
(The pump is on the 2 small bottles, not the 5 liter can)