JBL PROSCAPE Mg +MACROELEMENTS 250 ml
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A comprehensive answer to this question cannot be provided, as this would require a comprehensive analysis of the water, the fertilisation, lighting and the carbon dioxide supply, plus regular water care. Although algae can be attributed to an excess of nutrients - particularly phosphate and nitrate in this case, - in many cases, they are also the result of a lack of so-called micronutrients, of which iron is the best known. Very often, this is the deeper cause of the algae problem. When algae growth occurs, it is generally highly advisable to increase the amount and frequency of water changes, make sure there is a sufficient supply of fast-growing plants and fertilise these with JBL Ferropol or JBL Ferropol 24 in accordance with the instructions.
Generally, one should never change plant fertilizers abruptly. The fertilizers from different manufacturers have somewhat different compositions in terms of trace elements. This may cause temporary nutrient changes. It is best to change over in 3 steps: 1) Reduction of the old fertilizer by 1/3; replace this with 1/3 of the new fertilizer. Wait approx. 3-4 weeks and observe the reaction of the plants. 2) Reduction of the old fertilizer by 2/3; replace this with 2/3 of the new fertilizer. Wait approx. 3-4 weeks and observe the reaction of the plants. 3) Complete discontinuation of the old fertilizer and change-over to the new fertilizer. It is important to observe the reaction of plant growth and, in addition, to check the iron content of the water at least 2x weekly. Whereas the value should never drop to 0, it should never exceed 0.2 mg/l if possible. However, short peaks are no cause for concern. These measures should generally be carried out on a weekly basis, ideally right after a water change. This achieves better results than fertilizing in large doses at longer intervals.
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