JBL PROSCAPE Mg +MACROELEMENTS 250ml
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There is no comprehensive answer to this question, as it requires a comprehensive analysis of the water, fertilization, lighting, carbon dioxide supply, and regular water maintenance. Algae are not only caused by an excess of nutrients, in particular phosphate and nitrate, but very often also by a deficiency of micronutrients, of which iron is the best known. This is very often the underlying cause of algae problems. When algae appear, it is generally highly recommended to increase the amount and frequency of water changes, ensure that there is a good stock of fast-growing plants, and then fertilize these according to the instructions with JBL Ferropol or JBL Ferropol 24.
As a general rule, you should not change your plant fertilization regime abruptly. Fertilizers from different manufacturers vary slightly in their trace element composition. This can lead to temporary differences in the nutrient content of the water. It is best to make the change in three steps: 1) Reduce the old fertilizer by 1/3 and add 1/3 of the new fertilizer. Wait about 3-4 weeks and observe the reaction of the plants. 2) Reduce the old fertilizer by 2/3 and add 2/3 of the new fertilizer. Wait about 3-4 weeks and observe the reaction of the plants. 3) Stop using the old fertilizer completely and switch to the new fertilizer. It is important to observe the reaction of the plant growth on the one hand and to check the iron content of the water at least twice a week on the other. The value should never fall to 0, but should also not rise above approximately 0.2 mg/l if possible. Short-term peaks should not be taken into account. As a general rule, the measures should be carried out weekly, ideally after a water change. This will achieve better results than shock fertilization at longer intervals.
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